US2570549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: RCA Corp
•
Filing: 1947-04-18
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Granted: 1951-10-09
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Expires: 1967-04-18
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Hansell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:03
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/75; H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1292; Y; Y10; Y10S; Y10S116/00; Y10S116/09; Y10T; Y10T137/00; Y10T137/1624; Y10T137/3584; Y10T137/3709; Y10T137/3724
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |