US2804550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic light control
Assignee: Individual
•
Filing: 1952-08-14
•
Granted: 1957-08-27
•
Expires: 1972-08-14
Abstract
No abstract record available.
Inventors
- 👤 Artzt Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:58
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/257; H05; H05B; H05B39/00; H05B39/04; H05B39/041; H05B39/042; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2124404A
Cited
US2188679A
Cited
US2415191A
Cited
US2457456A
Cited
US2556455A
Cited
US2480424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |