USPTO serial 72117860
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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 | MEASURING INSTRUMENT COMPRISING A CURRENT TRANSFORMER AND AMMETER ADAPTED TO BE MOUNTED ON AN ELECTRICAL CONDUCTOR AND EFFECTIVE TO INDICATE LOAD CURRENT WITHOUT INTERRUPTION THEREOF | EXPIRED | Jan 3, 1955 |
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 |
|---|---|---|---|
| Dec 11, 1987 | EXRG | EXPIRED SEC. 9 | — |