Patent US2454094A successfully refreshed from Google Patents.
US2454094A
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Electron discharge device for producing electric oscillations
Assignee: SCOPHONY Corp OF AMERICA
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Filing: 1944-01-21
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Granted: 1948-11-16
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Expires: 1964-01-21
Abstract
No abstract record available.
Inventors
- 👤 Adolph H Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:09
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/64; H03; H03C; H03C5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2263248A
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US2350907A
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US2278210A
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US2321723A
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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) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |