US2592889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw and nut mechanism
Assignee: Individual
•
Filing: 1950-02-20
•
Granted: 1952-04-15
•
Expires: 1970-02-20
Abstract
No abstract record available.
Inventors
- 👤 Grimley David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/18; B; B25; B25B; B25B5/00; B25B5/06; B25B5/10; B25B5/101; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/2025; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US754962A
Cited
US783845A
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US898604A
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US978900A
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US1045745A
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US1382247A
Cited
GB418391A
Cited
US2138245A
Cited
US2247562A
Cited
US2338271A
Cited
US2372727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |