US2570641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spreading fluid clutch
Assignee: Borg Warner Corp
•
Filing: 1946-10-31
•
Granted: 1951-10-09
•
Expires: 1966-10-31
Abstract
No abstract record available.
Inventors
- 👤 Harold E Carnagua
- 👤 Donald W Kelbel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/06; F16D25/062; F16D25/065; F16H; F16H47/00; F16H47/06; F16H47/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US796989A
Cited
US847575A
Cited
US1475020A
Cited
DE487959C
Cited
US1953568A
Cited
US2064553A
Cited
US2136971A
Cited
US2136806A
Cited
US2211233A
Cited
US2273345A
Cited
US2300865A
Cited
US2291241A
Cited
US2361120A
Cited
US2414359A
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 |