Gem Instruments Corporation Trademarks
COLOR SCOPE
Filed: November 1, 1979
Optical Instruments for Quantifying the Color Appearance of Gem Materials
Owned by: Gem Instruments Corporation
Serial Number: 73237487
COLOR MASTER
Filed: November 5, 1979
Optical Instruments for Quantifying the Color Appearance of Gem Stones
Owned by: Gem Instruments Corporation
Serial Number: 73238042
VIDEO MASTER
Filed: September 4, 1981
Television Camera and Television Monitor for Use with Microscopes for Projection of Microscopic Views of Precious Stones
Owned by: Gem Instruments Corporation
Serial Number: 73326734
