US2673450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary turbine-type hydraulic coupling
Assignee: TWIN DISE CLUTCH Co
•
Filing: 1950-01-24
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Granted: 1954-03-30
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Expires: 1970-01-24
Abstract
No abstract record available.
Inventors
- 👤 Lloyd J Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:40
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/06; F16D33/16; F16K; F16K15/00; F16K15/18; F16K15/182; F16K2200/00; F16K2200/30; F16K2200/302; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7876; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2372326A
Cited
GB361334A
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US1927700A
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US2074346A
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US2004279A
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US2151075A
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US2441356A
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US2392421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |