Patent US2474960A successfully refreshed from Google Patents.
US2474960A
Expired / Lapsed
US
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Electronic device and circuit arrangement therefor
Assignee: National Union Radio Corp
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Filing: 1945-04-28
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Granted: 1949-07-05
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Expires: 1965-04-28
Abstract
No abstract record available.
Inventors
- 👤 Albert M Skellett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/10; H01J21/14; H01J2893/00; H01J2893/0029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1851549A
Cited
US1962447A
Cited
US2053268A
Cited
US1956350A
Cited
US2217774A
Cited
US2257795A
Cited
US2293368A
Cited
US2320756A
Cited
US2391967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |