US2955498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locks for crescent wrenches
Assignee: Individual
•
Filing: 1959-04-13
•
Granted: 1960-10-11
•
Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 John C Engstrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:57
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/10; B25B13/12; B25B13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190718926A
Cited
GB191008437A
Cited
US1414839A
Cited
US1739715A
Cited
US2378854A
Cited
US2691897A
Cited
US2709387A
Cited
US2817259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |