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US2457575A
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Assignee: RCA Corp
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Filing: 1944-05-23
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Granted: 1948-12-28
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Expires: 1964-05-23
Abstract
No abstract record available.
Inventors
- 👤 Liebscher Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:57
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2150467A
Cited
US2105410A
Cited
US2219506A
Cited
US2167842A
Cited
US2175690A
Cited
US2235173A
Cited
US2291648A
Cited
US2280607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |