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Patent US2731569A successfully refreshed from Google Patents.
US2731569A
Expired / Lapsed
US
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Hydraulic transmission and control
Assignee: Sundstrand Machine Tool Co
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Filing: 1952-07-08
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Granted: 1956-01-17
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Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Cardillo
- 👤 Melvin M Hann
- 👤 Jr Carl L Sadler
- 👤 Folke G Lundgard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:54
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2291011A
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US1418952A
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US2056896A
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US2161439A
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US2069230A
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US2177098A
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US2299234A
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US2389473A
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US2407013A
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US2500655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |