Patent US2464538A successfully refreshed from Google Patents.
US2464538A
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US
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Fluid pressure operated multiple clutch
Assignee: Twin Disc Inc
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Filing: 1946-02-27
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Granted: 1949-03-15
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Expires: 1966-02-27
Abstract
No abstract record available.
Inventors
- 👤 Harry H Vanderzee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:39
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/30; F; F16; F16D; F16D25/00; F16D25/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19484; Y10T74/19488
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1827811A
Cited
US1953568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |