Mark Identification

GLI

Serial Number

73073513

Filing Date

Dec 22, 1975

Registration Date

Feb 8, 1977

Trademark by

GREAT LAKES INSTRUMENTS INC.

Classification Information

PH, CONDUCTIVITY AND OXIDATION-REDUCTION SENSING CELLS AND PROBES AND ANALYZERS AND CONTROLS USED THEREWITH, AND LIQUID LEVEL SENSORS

Electrical and Scientific Apparatus