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US2463876A
Expired / Lapsed
US
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Cathode-temperature control system
Assignee: BELMONT RADIO Corp
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Filing: 1945-04-28
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Granted: 1949-03-08
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Expires: 1965-04-28
Abstract
No abstract record available.
Inventors
- 👤 Elmer G Hills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/04; H03; H03L; H03L1/00; H03L1/02; H03L1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |