LF Trademark
Serial Number: 71489916 • Registration: 0443861
LF is a trademark filed by
LITTLEFUSE, INC.
on October 13, 1945. The trademark is classified under Class 7 (Machinery).
The application is currently registered and active.
Trademark Classes
Owner Contact Info
Trademark Details
Filing Date
October 13, 1945
Registration Date
March 28, 1950
First Use Anywhere
August 21, 1944
First Use in Commerce
August 21, 1944
Filing History
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
Nov 22, 2021 CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
Nov 22, 2021 CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
Nov 22, 2021 CHAN
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Nov 22, 2021 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Nov 22, 2021 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Nov 22, 2021 TCCA
TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
Nov 22, 2021 EWAF
TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
Nov 22, 2021 EWAF
TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
Nov 22, 2021 EWAF
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Nov 22, 2021 ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Nov 22, 2021 ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Nov 22, 2021 ARAA
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Nov 22, 2021 REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Nov 22, 2021 REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Nov 22, 2021 REAP
TEAS CHANGE OF OWNER ADDRESS RECEIVED
Nov 22, 2021 COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
Nov 22, 2021 COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
Nov 22, 2021 COAR
NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED
Apr 29, 2020 NA89
NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED
Apr 29, 2020 NA89
NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED
Apr 29, 2020 NA89
REGISTERED AND RENEWED (FIFTH RENEWAL - 10 YRS)
Apr 29, 2020 RNL5
REGISTERED AND RENEWED (FIFTH RENEWAL - 10 YRS)
Apr 29, 2020 RNL5
REGISTERED AND RENEWED (FIFTH RENEWAL - 10 YRS)
Apr 29, 2020 RNL5
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Apr 29, 2020 89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Apr 29, 2020 89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Apr 29, 2020 89AG
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Apr 29, 2020 APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Apr 29, 2020 APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Apr 29, 2020 APRE
TEAS SECTION 8 & 9 RECEIVED
Feb 27, 2020 E89R
TEAS SECTION 8 & 9 RECEIVED
Feb 27, 2020 E89R
TEAS SECTION 8 & 9 RECEIVED
Feb 27, 2020 E89R
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Apr 17, 2019 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Apr 17, 2019 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Apr 17, 2019 TCCA
COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED
Mar 28, 2019 REM2
COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED
Mar 28, 2019 REM2
COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED
Mar 28, 2019 REM2
NEW CERTIFICATE UNDER SECTION 7 - PROCESSED
Feb 11, 2019 C.7C
NEW CERTIFICATE UNDER SECTION 7 - PROCESSED
Feb 11, 2019 C.7C
NEW CERTIFICATE UNDER SECTION 7 - PROCESSED
Feb 11, 2019 C.7C
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Feb 8, 2019 APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Feb 8, 2019 APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Feb 8, 2019 APRE
TEAS SECTION 7 REQUEST RECEIVED
Dec 28, 2018 ES7R
TEAS SECTION 7 REQUEST RECEIVED
Dec 28, 2018 ES7R
TEAS SECTION 7 REQUEST RECEIVED
Dec 28, 2018 ES7R
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Feb 8, 2017 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Feb 8, 2017 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Feb 8, 2017 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Oct 10, 2010 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Oct 10, 2010 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Oct 10, 2010 TCCA
REGISTERED AND RENEWED (FOURTH RENEWAL - 10 YRS)
Mar 27, 2010 RNL4
REGISTERED AND RENEWED (FOURTH RENEWAL - 10 YRS)
Mar 27, 2010 RNL4
REGISTERED AND RENEWED (FOURTH RENEWAL - 10 YRS)
Mar 27, 2010 RNL4
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Mar 27, 2010 89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Mar 27, 2010 89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Mar 27, 2010 89AG
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Mar 27, 2010 APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Mar 27, 2010 APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Mar 27, 2010 APRE
TEAS SECTION 8 & 9 RECEIVED
Mar 26, 2010 E89R
TEAS SECTION 8 & 9 RECEIVED
Mar 26, 2010 E89R
TEAS SECTION 8 & 9 RECEIVED
Mar 26, 2010 E89R
REVIEW OF CORRESPONDENCE COMPLETE
Oct 7, 2009 CORV
REVIEW OF CORRESPONDENCE COMPLETE
Oct 7, 2009 CORV
REVIEW OF CORRESPONDENCE COMPLETE
Oct 7, 2009 CORV
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Apr 6, 2009 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Apr 6, 2009 TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
Apr 6, 2009 TCCA
CASE FILE IN TICRS
Jan 27, 2009 CFIT
CASE FILE IN TICRS
Jan 27, 2009 CFIT
CASE FILE IN TICRS
Jan 27, 2009 CFIT
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Jul 27, 2006 ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Jul 27, 2006 ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Jul 27, 2006 ARAA
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Jul 27, 2006 REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Jul 27, 2006 REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Jul 27, 2006 REAP
PAPER RECEIVED
Oct 7, 2002 MAIL
PAPER RECEIVED
Oct 7, 2002 MAIL
PAPER RECEIVED
Oct 7, 2002 MAIL
REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)
Dec 1, 2000 RNL3
REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)
Dec 1, 2000 RNL3
REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)
Dec 1, 2000 RNL3
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Dec 1, 2000 89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Dec 1, 2000 89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
Dec 1, 2000 89AG
REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED
Mar 28, 2000 89AF
REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED
Mar 28, 2000 89AF
REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED
Mar 28, 2000 89AF
REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)
Sep 6, 1990 RNL2
REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)
Sep 6, 1990 RNL2
REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)
Sep 6, 1990 RNL2
RESPONSE RECEIVED TO POST REG. ACTION
Aug 2, 1990 RRPR
RESPONSE RECEIVED TO POST REG. ACTION
Aug 2, 1990 RRPR
RESPONSE RECEIVED TO POST REG. ACTION
Aug 2, 1990 RRPR
POST REGISTRATION ACTION MAILED - SEC. 9
May 24, 1990 PRA9
POST REGISTRATION ACTION MAILED - SEC. 9
May 24, 1990 PRA9
POST REGISTRATION ACTION MAILED - SEC. 9
May 24, 1990 PRA9
REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8
Mar 28, 1990 9.AF
REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8
Mar 28, 1990 9.AF
REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8
Mar 28, 1990 9.AF
REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS)
Mar 28, 1970 REN1
REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS)
Mar 28, 1970 REN1
REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS)
Mar 28, 1970 REN1
