USPTO serial 72350287
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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 |
|---|---|---|---|
| 001 | SYNTHETIC FIBROUS MATERIALS USED IN A CEMENT COMPOSITION FOR THE CONSTRUCTION, COMPLETION, TREATING AND SERVICING OF WELLS, SUCH AS OIL, GAS, BRINE AND WATER WELLS, AND FOR CONSTRUCTION IN GENERAL | EXPIRED | Jun 28, 1968 |
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| Date | Code | Event | What it means |
|---|---|---|---|
| Nov 4, 1992 | EXRG | EXPIRED SEC. 9 | — |
| Feb 28, 1977 | C15A | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. | — |