US3440520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant current regulator with moving coil transformer
Assignee: General Electric Co
•
Filing: 1967-09-26
•
Granted: 1969-04-22
•
Expires: 1987-09-26
Abstract
No abstract record available.
Inventors
- 👤 Howard T Jones
- 👤 Joe A Nuckolls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:46
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/04; H05B39/08; H05B39/083; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/14; G05F1/16; G05F1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1339793A
Cited
US2265980A
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US2779897A
Cited
US3079546A
Cited
US3184675A
Cited
US3102226A
Cited
US3222572A
Cited
US3249807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |