USPTO serial 72255201
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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 | TAP CHANGING EQUIPMENT ASSOCIATED WITH ELECTRIC TRANSFORMERS AND OTHER ELECTRIC POWER TRANSMISSION APPARATUS, AND FOR TRANSFORMERS AND OTHER ELECTRIC TRANSMISSION APPARATUS EQUIPPED WITH TAP CHANGERS | EXPIRED | Nov 18, 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 18, 1989 | EXRG | EXPIRED SEC. 9 | — |