US3391608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic torque motor
Assignee: GRESEN Manufacturing Co
•
Filing: 1966-07-11
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Granted: 1968-07-09
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Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Mortimer J Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:13
CPC Classifications
F; F03; F03C; F03C2/00; F03C2/08; F01; F01C; F01C1/00; F01C1/08; F01C1/10; F04; F04C; F04C2/00; F04C2/08; F04C2/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US10778A
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US372440A
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US423289A
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US459332A
Cited
US2989951A
Cited
US3215043A
Cited
US3139853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |