USPTO serial 72177338
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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 | IONIZATION TRANSDUCERS AND APPARATUS EMBODYING SAID IONIZATION TRANSDUCERS AND INCLUDING DIFFERENTIAL PRESSURE METERS, DIFFERENTIAL PRESSURE SENSORS, DIFFERENTIAL VACUUM TUBE VOLTMETERS AND METERS TO MEASURE TEMPERATURE OR PRESSURE OR OTHER VARIABLE TO BE MEASURED; COMMUNICATION APPARATUS EMBODYING LIGHT MODULATORS; COMPARATOR MICROMETERS; ROTOR MICROMETERS; AND DYNAMIC BALANCING MACHINES | EXPIRED | Oct 1, 1951 |
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 18, 1989 | EXRG | EXPIRED SEC. 9 | — |