US2812458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed electric generators in particular for automobile vehicles
Assignee: APP DE CONTROLE ET D EQUIPMENT
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Filing: 1956-06-22
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Granted: 1957-11-05
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Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Mennesson Bernard Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:52
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2786; H02K1/2787; H02K1/2789; H02K1/2791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1921841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |