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Patent US2626190A successfully refreshed from Google Patents.
US2626190A
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Tool joint
Assignee: Reed Roller Bit Co
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Filing: 1949-11-04
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Granted: 1953-01-20
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Expires: 1969-11-04
Abstract
No abstract record available.
Inventors
- 👤 Elvin G Boice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:12
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1518960A
Cited
US1607941A
Cited
US2054118A
Cited
US2334350A
Cited
US2345725A
Cited
US2535320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |