POLYPHASE DUPLEX
DEAD
Serial Number
71197820
Owner
KEUFFEL & ESSER COMPANYFirst Use Date
Jun 9, 1911
Filing Date
May 29, 1924
POLYPHASE DUPLEX Trademark
Serial Number: 71197820 • Registration: 0190958
POLYPHASE DUPLEX is a trademark filed by
KEUFFEL & ESSER COMPANY
on May 29, 1924. The trademark is classified under Class 9 (Computers & Electronics).
The application is currently no longer active.
Trademark Classes
Owner Contact Info
Trademark Details
Filing Date
May 29, 1924
Registration Date
October 28, 1924
First Use Anywhere
June 9, 1911
First Use in Commerce
June 9, 1911
Filing History
EXPIRED SEC. 9
Jan 10, 1986 EXRG
EXPIRED SEC. 9
Jan 10, 1986 EXRG
EXPIRED SEC. 9
Jan 10, 1986 EXRG
