Patent US2522893A successfully refreshed from Google Patents.
US2522893A
Expired / Lapsed
US
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Remote-control system
Assignee: RCA Corp
•
Filing: 1945-04-05
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Granted: 1950-09-19
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Expires: 1965-04-05
Abstract
No abstract record available.
Inventors
- 👤 Ellison S Purington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1597416A
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US1766524A
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US2141551A
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US2245347A
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US2235768A
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US2397477A
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US2393892A
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US2325829A
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US2396091A
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US2282102A
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US2408472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |