U.S. federal trademark · Serial No. 73232101 · Reg. No. 1155422
ELECTRONIC INSTRUMENTS--NAMELY, (( AUTOMATIC PORTABLE PH METERS FOR USE IN MEARURING THE ACIDITY OR BASICITY OF AQUEOUS LIQUIDS; )) HYDROGEN SULFIDE DETECTORS FOR USE IN MEASURING IONIC AND GASEOUS CONCENTRATIONS IN AQUEOUS LIQUIDS; PLATINUM WIRE SENSORS FOR USE IN MEASURING THE CONCENTRATION OF VARIOUS GASES IN THE AIR
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