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US2623939A
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US
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Remote-control system
Assignee: Westinghouse Electric Corp
•
Filing: 1949-04-02
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Granted: 1952-12-30
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Expires: 1969-04-02
Abstract
No abstract record available.
Inventors
- 👤 Willard A Derr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:01
CPC Classifications
H; H02; H02J; H02J13/00; H02J13/18; H02J13/333; H02J13/34; Y; Y02; Y02E; Y02E60/00; Y04; Y04S; Y04S10/00; Y04S10/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1745072A
Cited
US1709031A
Cited
US1793828A
Cited
US1913188A
Cited
US2276646A
Cited
US2368826A
Cited
US2456533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |