US2741927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratchet mechanism for chain hoists
Assignee: AB Chance Co
•
Filing: 1952-01-30
•
Granted: 1956-04-17
•
Expires: 1972-01-30
Abstract
No abstract record available.
Inventors
- 👤 William L Hollander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:46
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/12; B66D3/14; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1558; Y10T74/1565; Y10T74/1566; Y10T74/1568; Y10T74/1569; Y10T74/1571; Y10T74/1577
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US986826A
Cited
US1161610A
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US1300375A
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US1380043A
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US1742060A
Cited
US2165984A
Cited
US2243361A
Cited
US2153546A
Cited
US2377324A
Cited
US2480303A
Cited
US2470019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |