US2804186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch safety mechanism
Assignee: Worthington Corp
•
Filing: 1955-04-20
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Granted: 1957-08-27
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Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Keir
- 👤 George E Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:11
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; F04B9/02; F16; F16D; F16D25/00; F16D25/12; F16D25/14; F16D48/00; F16D48/02; F16D48/04; F16D2048/0221; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7062
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) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |