Patent US2961830A successfully refreshed from Google Patents.
US2961830A
Expired / Lapsed
US
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Hydraulic torque converter
Assignee: Twin Disc Inc
•
Filing: 1957-01-07
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Granted: 1960-11-29
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Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Marvin W Dundore
- 👤 Raymond C Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:48
CPC Classifications
F; F16; F16H; F16H41/00; F16H41/24; F16H41/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1760397A
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US2185498A
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US2168862A
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US2190830A
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US2292384A
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US2379015A
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US2306758A
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US2357338A
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US2694950A
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FR1002800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |