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US2585303A
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US
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Overshot tool string knuckle joint
Assignee: Individual
•
Filing: 1946-08-31
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Granted: 1952-02-12
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Expires: 1966-08-31
Abstract
No abstract record available.
Inventors
- 👤 William H Dumble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:04
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/12; E21B31/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1594668A
Cited
US1696378A
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US1718771A
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US1738819A
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US1800490A
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US2026295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |