US2604587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal selecting means
Assignee: RCA Corp
•
Filing: 1947-11-12
•
Granted: 1952-07-22
•
Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 Lyons Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:21
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0802; H04B7/0817
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB197077A
Cited
US2031607A
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US2196259A
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US2237457A
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US2236497A
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US2420868A
Cited
US2384456A
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US2511014A
Cited
US2504341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |