Patent US2673614A successfully refreshed from Google Patents.
US2673614A
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Anchoring assembly for oil tools
Assignee: Otis Engineering Corp
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Filing: 1949-10-14
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Granted: 1954-03-30
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Expires: 1969-10-14
Abstract
No abstract record available.
Inventors
- 👤 Ira A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1856469A
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US2144850A
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US2177172A
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US2191750A
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US2338370A
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US2342930A
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US2392244A
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US2571478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |