USPTO serial 72111090
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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 | THERMOCOUPLE GAUGES, IONIZATION HOT FILAMENT GAUGES, IONIZATION COLD CATHODE GAUGES, PRESSURE CONTROL SWITCHES AND CALIBRATION STANDS, THE SAID GAUGES BEING VACUUM GAUGES USED FOR THE MEASUREMENT AND/OR CONTROL OF PRESSURES IN THE RANGE OF 300 MILLIMETERS OR LESS, AND IONIZATION GAUGE TUBES, COLD CATHODE GAUGE TUBES AND THERMOCOUPLE GAUGE TUBES, THE SAME BEING THE PRIMARY SENSING ELEMENTS ASSOCIATED WITH THE GAUGES ABOVE MENTIONED, AND FOR A VACUUM THERMOCOUPLE BULB WHICH IS UTILIZED FOR THE MEASUREMENT OF HIGH FREQUENCY CURRENT | EXPIRED | Jul 15, 1960 |
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 |
|---|---|---|---|
| Sep 17, 1987 | EXRG | EXPIRED SEC. 9 | — |