US2941422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant speed drive
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1957-10-04
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Granted: 1960-06-21
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Barish Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:48
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/664; F16H61/6646; F16H15/00; F16H15/48; F16H15/50; F16H15/506
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |