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Patent US2812831A successfully refreshed from Google Patents.
US2812831A
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Rotor brake actuator and automatic slack adjuster therefor
Assignee: American Steel Foundries
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Filing: 1953-08-28
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Granted: 1957-11-12
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Expires: 1973-08-28
Abstract
No abstract record available.
Inventors
- 👤 Mehmet K Coskun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:06
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0007; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1614976A
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US1695665A
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US2045593A
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GB405958A
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US2109637A
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US2379796A
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US2429693A
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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) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |