Duke Scientific Corporation Trademarks
COVASPHERES
Filed: September 24, 1996
chemical reagents for laboratory use
Owned by: Duke Scientific Corporation
Serial Number: 75170950
VALIDEX
Filed: September 24, 1996
fluid suspension of calibration particles for testing, measurement and calibration of a wide range of instruments and materials…
Owned by: Duke Scientific Corporation
Serial Number: 75170951
DUKE SCIENTIFIC CORPORATION
Filed: September 25, 1996
reagents for scientific research
Owned by: Duke Scientific Corporation
Serial Number: 75171998
