Patent US2838719A successfully refreshed from Google Patents.
US2838719A
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US
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Photocell circuit control arrangement
Assignee: CMC Electronics Inc
•
Filing: 1956-07-02
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Granted: 1958-06-10
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Chitty Michael William Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/22; H01H47/24; H05; H05B; H05B47/00; H05B47/10; H05B47/105; H05B47/11; Y; Y02; Y02B; Y02B20/00; Y02B20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2080926A
Cited
US2230435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |