Patent US1944371A successfully refreshed from Google Patents.
US3522508A
Expired / Lapsed
US
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Control circuit in electrical generating system
Assignee: Prestolite Electric Inc
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Filing: 1967-04-05
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Granted: 1970-08-04
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Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Edward Gadd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:31
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/24; H02J7/2437; H02J7/243; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/92
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) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |