Patent US2472204A successfully refreshed from Google Patents.
US2472204A
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High-frequency concentric line oscillator
Assignee: Individual
•
Filing: 1946-03-01
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Granted: 1949-06-07
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Expires: 1966-03-01
Abstract
No abstract record available.
Inventors
- 👤 Fubini Eugene
- 👤 Hegar C Kriegel
- 👤 John G Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:25
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2287845A
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US2289846A
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US2284405A
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US2353742A
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US2408355A
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US2416565A
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US2409640A
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US2416080A
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US2416567A
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US2412805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |