Serial Number
74016422
Owner
Gemological Products CorporationAttorney
ALEXANDER C. JOHNSON, JR.First Use Date
Jan 15, 1980
Filing Date
Jan 5, 1990
PORTALAB Trademark
Serial Number: 74016422 • Registration: 1643415
Trademark Classes
Owner Contact Info
Legal Representation
Trademark Details
Filing Date
January 5, 1990
Registration Date
May 7, 1991
First Use Anywhere
January 15, 1980
First Use in Commerce
June 1, 1980
Published for Opposition
February 12, 1991
Cancellation Date
May 18, 2002
Goods & Services
gemological test kit, namely microscope, magnification attachments, fiberoptic probe, polarizing filters, ultraviolet viewer, refractometer, light source apparatus, prism spectroscope, diamond color grading light, diamond thermal conductivity probe, diamond grading tray, heavy liquid set with calibration stones and adjustment liquid, immersion cell, viewing cabinet, leveridge gauge with high setting attachment, calcite dichroscope, thermal reaction tester, carat/gram weight scale, tweezers and stoneholder, optic figure sphere, clear and frosted stage plates, rechargeable battery pack and voltage switchable power supply, built into a ruggedized shipping case and sold as a unit, and lab table therefor