USPTO serial 71400950
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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 |
|---|---|---|---|
| 023 | APPARATUS FOR THE TREATMENT OF SOLIDS SUSPENDED IN LIQUIDS IN SEWAGE SYSTEMS SUCH AS THICKENERS AND CLARIFIERS AND/OR DIGESTERS | EXPIRED | Nov 15, 1937 |
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 |
|---|---|---|---|
| Feb 2, 1999 | EXRG | EXPIRED SEC. 9 | — |
| Apr 26, 1978 | REN2 | REGISTERED AND RENEWED (SECOND RENEWAL - 20 YRS) | — |