US2851137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft locking mechanism
Assignee: Yale and Towne Manufacturing Co
•
Filing: 1954-07-22
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Granted: 1958-09-09
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Expires: 1974-07-22
Abstract
No abstract record available.
Inventors
- 👤 George E Gravenstine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:58
CPC Classifications
F; F16; F16B; F16B1/00; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; F16H57/00; F16H57/02; F16H57/021; F16H2057/0213; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |