US3465228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse width control for adjustable speed drive system
Assignee: General Electric Co
•
Filing: 1967-05-19
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Granted: 1969-09-02
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 James Long
- 👤 Niels P Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/22; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/912; 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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |