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Patent US3413878A successfully refreshed from Google Patents.
US3413878A
Expired / Lapsed
US
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Double open end wrench with flexible nut engaging means
Assignee: Individual
•
Filing: 1967-11-07
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Granted: 1968-12-03
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Expires: 1987-11-07
Abstract
No abstract record available.
Inventors
- 👤 William H Mariner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:17
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/10; B25B13/02; B25B13/04; B25B13/46; B25B13/461; B25B13/462; B25B13/463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1196060A
Cited
US2057949A
Cited
US2181012A
Cited
US2317037A
Cited
US2320599A
Cited
US3200676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |