Patent US2470443A successfully refreshed from Google Patents.
US2470443A
Expired / Lapsed
US
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Means for and method of continuously matching and controlling power for high-frequency heating of reactive loads
Assignee: Individual
•
Filing: 1944-07-21
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Granted: 1949-05-17
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Expires: 1964-07-21
Abstract
No abstract record available.
Inventors
- 👤 Mittelmann Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/46; H05B6/48; H05B6/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2324525A
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US1994324A
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US1998322A
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US2074145A
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US2147689A
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US2216598A
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US2304958A
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US2293851A
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US2358454A
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US2396004A
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US2415799A
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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) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |