Patent US2570889A successfully refreshed from Google Patents.
US2570889A
Expired / Lapsed
US
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Fluid impact coupling and clutch
Assignee: Individual
•
Filing: 1947-07-29
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Granted: 1951-10-09
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Expires: 1967-07-29
Abstract
No abstract record available.
Inventors
- 👤 Wilhelmus Petrus Van Lammeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/48; F16H61/50; F16H61/52; F16H61/56; Y; Y10; Y10S; Y10S74/00; Y10S74/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1859448A
Cited
US2116461A
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US2152113A
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US2267334A
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US2377009A
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US2351516A
Cited
US2292482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |