Patent US2627347A successfully refreshed from Google Patents.
US2627347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric control circuit
Assignee: University of California Berkeley
•
Filing: 1949-08-22
•
Granted: 1953-02-03
•
Expires: 1969-08-22
Abstract
No abstract record available.
Inventors
- 👤 John B Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/04; B07C5/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1972682A
Cited
US1929273A
Cited
US2024300A
Cited
US2096427A
Cited
US2149177A
Cited
US2244826A
Cited
US2312357A
Cited
US2433946A
Cited
US2433557A
Cited
US2413070A
Cited
US2434680A
Cited
US2445460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-03 | 1956-08-04 | 1957-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-03 | 1960-08-04 | 1961-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-03 | 1964-08-04 | 1965-02-03 | $7700.00 | Window Closed / Lapsed |