US2869916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable hook mechanism
Assignee: Individual
•
Filing: 1952-06-30
•
Granted: 1959-01-20
•
Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Charles J Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
B; B64; B64D; B64D7/00; B64D7/08; B64D1/00; B64D1/02; B64D1/04; B64D1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA197275A
Cited
US997438A
Cited
US1434991A
Cited
US2426221A
Cited
US2502416A
Cited
US2544830A
Cited
US2547313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |