Patent US2420716A successfully refreshed from Google Patents.
US2420716A
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Assignee: RCA Corp
•
Filing: 1944-11-04
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Granted: 1947-05-20
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Expires: 1964-11-04
Abstract
No abstract record available.
Inventors
- 👤 George A Morton
- 👤 Leslie E Flory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
G; G10; G10L; G10L13/00; G10L13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320366A
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US1352940A
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US1390883A
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US1350954A
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US1542937A
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US1550197A
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US1791794A
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US1751584A
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US1798118A
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US1897141A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |