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US2684433A
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Voltage control for high-frequency heating electrodes
Assignee: National Cylinder Gas Co
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Filing: 1952-08-05
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Granted: 1954-07-20
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Expires: 1972-08-05
Abstract
No abstract record available.
Inventors
- 👤 Wilson Thomas Lamont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:08
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/46; H05B6/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2121158A
Cited
US2197124A
Cited
US2215582A
Cited
US2465102A
Cited
US2488545A
Cited
US2529717A
Cited
US2504109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |