Patent US2423968A successfully refreshed from Google Patents.
US2423968A
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US
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High-frequency apparatus
Assignee: Farnsworth Television and Radio Corp
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Filing: 1944-08-26
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Granted: 1947-07-15
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Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:40
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/10; H01J25/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1603282A
Cited
US1967253A
Cited
US2059863A
Cited
US2281935A
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US2323201A
Cited
US2280026A
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US2350907A
Cited
US2233927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |