USPTO serial 71659634
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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 |
|---|---|---|---|
| 006 | FREE-FLOWING MATERIAL COMPRISING AS ITS PRINCIPAL INGREDIENT A REACTION PRODUCT OF CAUSTIC SODA AND LIGNITE FOR USE IN THE PREPARATION AND TREATMENT OF OIL EMULSION MUDS AND AS A TREATING AND CONDITIONING AGENT FOR AQUEOUS MUDS AND IN DRILLING WELLS | EXPIRED | Oct 8, 1953 |
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 |
|---|---|---|---|
| Jun 12, 1995 | EXRG | EXPIRED SEC. 9 | — |
| Sep 7, 1974 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |