Patent US2669333A successfully refreshed from Google Patents.
US2669333A
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Fluid engaged clutch and brake
Assignee: Rockwell Manufacturing Co
•
Filing: 1948-07-29
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Granted: 1954-02-16
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Expires: 1968-07-29
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:59
CPC Classifications
F; F16; F16D; F16D67/00; F16D67/02; F16D67/04; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/348; B23Q2705/00; B23Q2705/10; B23Q2705/18; B23Q2705/182; B23Q2705/185; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2135576A
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US2170538A
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US2161702A
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US2298645A
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US2352140A
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US2398806A
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US2399853A
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US2489258A
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US2483521A
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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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |