Patent US3000472A successfully refreshed from Google Patents.
US3000472A
Expired / Lapsed
US
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Forced air cooled brakes
Assignee: Individual
•
Filing: 1959-04-24
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Granted: 1961-09-19
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Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Gerald P Sturgis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:32
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/82; F16D65/833; F16D51/00; F16D51/16; F16D51/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1974905A
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US2105323A
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US2042750A
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US2091865A
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US2647592A
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US2851132A
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US2966241A
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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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |