US2453994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency power output control
Assignee: RCA Corp
•
Filing: 1945-05-22
•
Granted: 1948-11-16
•
Expires: 1965-05-22
Abstract
No abstract record available.
Inventors
- 👤 Lester S Lappin
- 👤 Richard P Corporation
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:37
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/04; Y; Y10; Y10S; Y10S439/00; Y10S439/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US400978A
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US2324525A
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US1267959A
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US1642198A
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US1884482A
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US1753408A
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US2138181A
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US2184283A
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US2238262A
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US2225424A
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US2383992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |