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US2422088A
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Electronic discriminator
Assignee: RCA Corp
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Filing: 1944-04-03
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Granted: 1947-06-10
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Expires: 1964-04-03
Abstract
No abstract record available.
Inventors
- 👤 Warren R Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/32; 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)
US1952493A
Cited
US2146607A
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US2159774A
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US2173267A
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US2284829A
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US2293418A
Cited
US2289319A
Cited
US2307693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |