Patent US2773493A successfully refreshed from Google Patents.
US2773493A
Expired / Lapsed
US
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Air operated engagement means for impulse coupled magnetos
Assignee: Worthington Corp
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Filing: 1952-12-05
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Granted: 1956-12-11
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Expires: 1972-12-05
Abstract
No abstract record available.
Inventors
- 👤 Steven George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:09
CPC Classifications
F; F02; F02P; F02P15/00; F02P15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB325747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |