Patent DE1814739U successfully refreshed from Google Patents.
US2738423A
Expired / Lapsed
US
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Regenerative frequency dividers
Assignee: RCA Corp
•
Filing: 1952-02-19
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Granted: 1956-03-13
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Expires: 1972-02-19
Abstract
No abstract record available.
Inventors
- 👤 Sziklai George Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/08; H03B19/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2098386A
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US2269417A
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US2344678A
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US2509280A
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US2562952A
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US2490448A
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US2496994A
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US2562311A
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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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |