US2543048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell
Assignee: STC PLC
•
Filing: 1946-10-05
•
Granted: 1951-02-27
•
Expires: 1966-10-05
Abstract
No abstract record available.
Inventors
- 👤 Henry J Nachod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/14; H; H10; H10F; H10F99/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1912653A
Cited
US2015431A
Cited
US2039230A
Cited
US2172200A
Cited
US2406139A
Cited
US2379374A
Cited
US2403863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |