US2634157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rod gripping tool
Assignee: COAST OIL TOOL Corp
•
Filing: 1949-12-08
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Granted: 1953-04-07
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Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 John L Haddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:24
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; E21B19/161; B; B25; B25B; B25B13/00; B25B13/48; B25B13/50; B25B13/5008; B25B13/5016; B25B13/5025; B25B13/5041; B25B13/505; B25B9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |