Patent US2904961A successfully refreshed from Google Patents.
US2904961A
Expired / Lapsed
US
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Multi-fluid brake operating motor
Assignee: ThyssenKrupp Budd Co
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Filing: 1957-09-23
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Granted: 1959-09-22
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:09
CPC Classifications
B; B61; B61H; B61H5/00; B60; B60T; B60T17/00; B60T17/08; 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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |