US2805736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor brake
Assignee: American Steel Foundries
•
Filing: 1952-07-30
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Granted: 1957-09-10
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Expires: 1972-07-30
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Paulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:12
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)
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US2215747A
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US2503058A
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BE495365A
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US2692659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |