USPTO serial 72238734
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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 | ELECTRONIC AND ELECTRO-MECHANICAL CONTROL SYSTEMS AND CONTROL SYSTEMS SUB-COMBINATION ELEMENTS FOR USE WITH MACHINE TOOLS AND AS SERVO ELEMENTS-NAMELY, SERVO AMPLIFIERS, MODULATORS, LIMITERS, SOLID STATE LOGIC ELEMENTS, SOLID STATE SWITCHES, DIGITAL TO ANALOG CONVERTERS | EXPIRED | Feb 1, 1961 |
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 |
|---|---|---|---|
| Nov 29, 1987 | EXRG | EXPIRED SEC. 9 | — |