US2987142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor brake
Assignee: American Steel Foundries
•
Filing: 1958-08-07
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Granted: 1961-06-06
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Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Arden Edgar Gracie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:36
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/2245; B; B60; B60T; B60T1/00; B60T1/02; B60T1/06; B60T1/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB330478A
Cited
US1978974A
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US2228818A
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US2342083A
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US2365369A
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US2383376A
Cited
US2498625A
Cited
US2488845A
Cited
US2890767A
Cited
US2827132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |