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Patent US2658148A successfully refreshed from Google Patents.
US2658148A
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Generator coupling circuit
Assignee: Individual
•
Filing: 1946-02-18
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Granted: 1953-11-03
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Expires: 1966-02-18
Abstract
No abstract record available.
Inventors
- 👤 John E Evans
- 👤 Foster F Rieke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:39
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/48; H03H7/487
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2110448A
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US2113225A
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US2258148A
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US2270771A
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US2514678A
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US2464115A
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US2472200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |