US2859838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor brake actuating mechanism
Assignee: American Steel Foundries
•
Filing: 1953-06-16
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Granted: 1958-11-11
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Expires: 1973-06-16
Abstract
No abstract record available.
Inventors
- 👤 Carl E Tack
- 👤 Fred E Bachman
- 👤 George W Crabtree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:15
CPC Classifications
B; B61; B61H; B61H5/00; F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/2245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191118318A
Cited
US2242853A
Cited
US2284605A
Cited
US2348078A
Cited
US2359806A
Cited
US2581746A
Cited
US2667946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |