US3483429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low cost,solid state photocontrol circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1967-05-16
•
Granted: 1969-12-09
•
Expires: 1987-05-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Engel
- 👤 Robert T Elms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:00
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/04; H05B39/041; H05B39/042; H05B39/08; H05B39/081; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3328606A
Cited
US3335291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |