US2657772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk brake
Assignee: Wingfoot Corp
•
Filing: 1948-07-15
•
Granted: 1953-11-03
•
Expires: 1968-07-15
Abstract
No abstract record available.
Inventors
- 👤 Richard K Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:56
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/28; F16D55/32; F16D2055/0004; F16D2055/0062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1755829A
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US1806151A
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US2152067A
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US1951597A
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US2156415A
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US2236346A
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US2371554A
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US2197126A
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US2351041A
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US2419113A
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US2392970A
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US2474990A
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US2485086A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |