US2739653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool and anchoring means therefor
Assignee: Mcgaffey-Taylor Corp
•
Filing: 1950-06-05
•
Granted: 1956-03-27
•
Expires: 1970-06-05
Abstract
No abstract record available.
Inventors
- 👤 Marcus W Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US406162A
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US1260036A
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US1842107A
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US1913548A
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US2092843A
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US2227347A
Cited
US2547461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |