Patent US2358382A successfully refreshed from Google Patents.
US2358382A
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Frequency modulation signal system
Assignee: RCA Corp
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Filing: 1941-08-29
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Granted: 1944-09-19
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Expires: 1961-08-29
Abstract
No abstract record available.
Inventors
- 👤 Wendell L Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/002; H04B14/006; H03; H03D; H03D7/00; H03D7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-09-19 | 1948-03-20 | 1948-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-19 | 1952-03-20 | 1952-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-19 | 1956-03-20 | 1956-09-19 | $7700.00 | Window Closed / Lapsed |