Patent US2423931A successfully refreshed from Google Patents.
US2423931A
Expired / Lapsed
US
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Apparatus for generating sweep voltages
Assignee: RCA Corp
•
Filing: 1944-04-26
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Granted: 1947-07-15
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Expires: 1964-04-26
Abstract
No abstract record available.
Inventors
- 👤 Howard E Etter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:52
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2114938A
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US2052184A
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US2207511A
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US2262838A
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US2183966A
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US2241256A
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US2266526A
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US2375709A
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US2363810A
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 |