US2998547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magneti amplifier control circuitry for gated electronic switches and application to ghting controls
Assignee: ACF Industries Inc
•
Filing: 1959-11-27
•
Granted: 1961-08-29
•
Expires: 1979-11-27
Abstract
No abstract record available.
Inventors
- 👤 Berman Baruch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1555; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2151753A
Cited
US2157834A
Cited
US2466028A
Cited
US2463463A
Cited
US2848614A
Cited
US2809303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |