USPTO serial 72306801
CLAYMASTER
Reviewed by CopyMark Law Group
Reg. 0884992Status 900
- Filing date
- Status date
- Registration date
- Jan 27, 1970
- Examiner
- —
- Law office
- FILE DESTROYED
What this means
This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.
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Owner
Goods and services
| Class | Description | Status | First use |
|---|---|---|---|
| 023 | ASSEMBLY OF PUMPS, CENTRIFUGES, SCRUBBERS, ETC., FOR RECOVERING WEIGHTING AND OTHER CONSTITUENTS FROM A MUDLIKE MIXTURE IN WELL DRILLING OPERATIONS | EXPIRED | Sep 30, 1967 |
Related trademarks
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Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Nov 4, 1992 | EXRG | EXPIRED SEC. 9 | — |