US2660970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fluid coupling rotor elements
Assignee: Old Carco LLC
•
Filing: 1949-07-13
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Granted: 1953-12-01
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Expires: 1969-07-13
Abstract
No abstract record available.
Inventors
- 👤 Olavi M Koskinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:03
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/18; F16D33/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1977299A
Cited
US2328393A
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US2436412A
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US2429503A
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US2409593A
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US2431855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |