Patent US2724281A successfully refreshed from Google Patents.
US2724281A
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Self-adjusting friction clutch and reversing mechanism
Assignee: SUMMERS GYROSCOPE Co
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Filing: 1953-06-25
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Granted: 1955-11-22
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Expires: 1973-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas O Summers
- 👤 Roman J Dolude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
F; F16; F16D; F16D27/00; F16D48/00; F16D48/06; F16D48/064; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/104; F16D2500/10443; F16D2500/1045; F16D2500/50; F16D2500/502; F16D2500/5023; F16D2500/50245; F16D2500/50266; F16D2500/50275; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7041; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19386; Y10T74/19409; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19437
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |