US2464403A
Expired / Lapsed
US
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Apparatus for heating dielectric materials electronically
Assignee: RCA Corp
•
Filing: 1945-08-30
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Granted: 1949-03-15
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Expires: 1965-08-30
Abstract
No abstract record available.
Inventors
- 👤 George W Klingaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:12
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/001; F26B13/003; D; D01; D01D; D01D10/00; D01D10/04; D01D10/0418; D01D10/06; F26B3/00; F26B3/32; F26B3/34; F26B3/347; H; H05; H05B; H05B6/00; H05B6/64; H05B6/78; Y; Y10; Y10S; Y10S425/00; Y10S425/013
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) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |