Patent US2826901A successfully refreshed from Google Patents.
US2826901A
Expired / Lapsed
US
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Friction clutch
Assignee: Individual
•
Filing: 1954-05-11
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Granted: 1958-03-18
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Expires: 1974-05-11
Abstract
No abstract record available.
Inventors
- 👤 Barrenechea Pedro Unceta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:50
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D2013/642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967344A
Cited
US2028951A
Cited
FR862606A
Cited
US2337134A
Cited
US2300720A
Cited
US2547427A
Cited
US2613785A
Cited
FR1036839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |