Mark Identification

OPTEST

Serial Number

74241145

Filing Date

Jan 28, 1992

Trademark by

DDX INC.

Classification Information

optical diagnostics systems; namely, immunosensor testing instruments utilizing thin film methods for generating visual or instrument-read signals, test kits comprised of chemically modified silicon wafers and specific biological coatings, and ellipsometric 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