Mark Identification

OPTEST

Serial Number

74492739

Filing Date

Feb 22, 1994

Trademark by

DDX INC.

Classification Information

optical diagnostics systems; namely, immuno sensor testing instruments utilizing thin film methods for generating visual or instrument-read signals, test kits comprised of chemically modified silicon wafers and specific biological codings, and elipsometric diagnostic apparatuses, for use in the performance of immunoassay or other mass change diagnostic applications for veterinary, environmental and food processing diagnostic applications

Electrical and Scientific Apparatus