Patent US2470019A successfully refreshed from Google Patents.
US2470019A
Expired / Lapsed
US
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Combination hoist, jack, and wire stretcher
Assignee: COFFING HOIST Co
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Filing: 1947-12-12
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Granted: 1949-05-10
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Expires: 1967-12-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Coffing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:33
CPC Classifications
F; F16; F16G; F16G11/00; F16G11/12; B; B66; B66D; B66D3/00; B66D3/02; B66D2700/00; B66D2700/02; B66D2700/021; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1558; Y10T74/1577
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US583785A
Cited
US2377324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |