USPTO serial 72404443
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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 |
|---|---|---|---|
| 021 | ELECTRIC DAMPER AND VALVE ACTUATORS; ELECTROHYDRAULIC VALVE AND DAMPER ACTUATORS; ELECTRICAL CONTACTORS; SERVO UNITS; ELECTRIC MOTOR CONTROLS; POSITION INDICATOR SWITCHES; ELECTRICAL SIGNAL AMPLIFIERS; CURRENT-TO-VOLTAGE CONVERTERS; VOLTAGE LIMITERS; ELECTRICAL REMOTE SET POINT CONTROLS; ELECTRICAL RESET CONTROLS; SIGNAL DISCRIMINATORS; TRANSFORMERS; AC AND DC POWER SUPPLIES; ELECTRIC AND SOLID STATE SWITCHES AND RELAYS; ELECTRIC AND SOLID STATE LIMIT SWITCHES AND CONTROLS; ELECTRIC OVERLOAD CONTROLS; SURVEILLANCE EQUIPMENT COMPRISING ELECTRICAL SIGNALLING BETWEEN REMOTE AREAS AND A CONTROL STATION; ELECTRONIC CONTROLLERS FOR STATIC PRESSURE AND LOAD LIMITING; ELECTRO-HYDRAULIC POWER PACKS; ELECTRIC NETWORKS FOR POSITION INDICATOR, OUT-PUT LIMITING, REVERSING, SEQUENCING, STAGING; SOLENOID VALVE OERATORS; AND PARTS AND COMPONENTS FOR ALL OF THE FOREGOING | EXPIRED | Mar 26, 1958 |
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 |
|---|---|---|---|
| Jul 3, 1995 | EXRG | EXPIRED SEC. 9 | — |
| Oct 7, 1980 | C15A | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. | — |