USPTO serial 72247737
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This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.
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| Class | Description | Status | First use |
|---|---|---|---|
| 026 | APPARATUS FOR TESTING HEARING, COMPRISING AUDIOMETER, NOISE GENERATOR, ELECTRO-ACOUSTIC EAR, GROUP AUDIOMETER, SOUND ANALYZER AND ASSOCIATED AMPLIFIER, ACOUSTIC CALIBRATOR, AND NOISE-ATTENUATING EARPHONE HOUSINGS | EXPIRED | Dec 29, 1965 |
CopyMark links this record to cited §2(d) serials, the owner's other marks, Nice classes, similar mark names, and recently changed USPTO applications.
| Date | Code | Event | What it means |
|---|---|---|---|
| Jan 25, 1989 | EXRG | EXPIRED SEC. 9 | — |