US2646966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated wrench
Assignee: Individual
•
Filing: 1951-12-11
•
Granted: 1953-07-28
•
Expires: 1971-12-11
Abstract
No abstract record available.
Inventors
- 👤 Glenn A Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:26
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1300995A
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US1820545A
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US1831259A
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US2000221A
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US2425793A
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US2514914A
Cited
US2550045A
Cited
US2573212A
Cited
US2566561A
Cited
US2556536A
Cited
US2624550A
Cited
US2566999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |