Patent US3439557A successfully refreshed from Google Patents.
US3439557A
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Friction regulating mechanism
Assignee: Ford Motor Co
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Filing: 1966-12-02
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Granted: 1969-04-22
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Expires: 1986-12-02
Abstract
No abstract record available.
Inventors
- 👤 Charles C Bookout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:27
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/12; F16F; F16F7/00; F16F7/02; F16F7/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/20576; Y10T74/20636; Y10T74/2066; Y10T74/20888; Y10T74/21; Y10T74/2173; Y10T74/2178
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21623E
Cited
US1043121A
Cited
GB127697A
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US1392936A
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US1485419A
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US2581080A
Cited
US2749825A
Cited
US2810300A
Cited
US3185276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |