US2534769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric motor control
Assignee: RCA Corp
•
Filing: 1946-08-29
•
Granted: 1950-12-19
•
Expires: 1966-08-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen V Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:05
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1787435A
Cited
US2109222A
Cited
US2112218A
Cited
US2423534A
Cited
US2354185A
Cited
US2413120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |