Patent US3768466A successfully refreshed from Google Patents.
Patent US2702618A successfully refreshed from Google Patents.
US2702618A
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Hydraulically operated friction clutch or brake with multiple relief valves
Assignee: Curtiss Wright Corp
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Filing: 1951-04-03
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Granted: 1955-02-22
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Expires: 1971-04-03
Abstract
No abstract record available.
Inventors
- 👤 Stanley W Baker
- 👤 Cranston W Folley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:04
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D48/04; F16D25/00; F16D25/12; F16D25/14; F16D2048/0221; Y; Y10; Y10S; Y10S74/00; Y10S74/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR636240A
Cited
US1758370A
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US2100810A
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FR784051A
Cited
US2170538A
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GB524702A
Cited
US2386220A
Cited
GB586385A
Cited
US2577981A
Cited
US2556809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |