Patent US2937551A successfully refreshed from Google Patents.
US2937551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open end ratchet wrench
Assignee: COLUMBIA PRODUCTS Inc
•
Filing: 1959-02-16
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Granted: 1960-05-24
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Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Akers David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/46; B25B13/02; B25B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308440A
Cited
US1320688A
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US879155A
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US2470007A
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US2565154A
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US2592781A
Cited
US2795160A
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US2855814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |