US3525029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse width modulation power switching servo amplifier and mechanism
Assignee: General Electric Co
•
Filing: 1967-01-03
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Granted: 1970-08-18
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 John A Joslyn
- 👤 David A Citrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/40; G; G05; G05B; G05B5/00; G05B5/01; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5387; H02M7/53871; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/29; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217; H03F3/2173; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/915; Y10S388/916
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |