Patent US2939283A successfully refreshed from Google Patents.
US2939283A
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Self-contained power actuator
Assignee: Electrol Inc
•
Filing: 1957-02-14
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Granted: 1960-06-07
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Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Benjamin N Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:33
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1849044A
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US1845176A
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US1970286A
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US2096574A
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US2597050A
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US2455948A
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US2443568A
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US2486707A
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US2529777A
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US2633871A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |