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US2559719A
Expired / Lapsed
US
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Frequency-stabilizing method and system
Assignee: RCA Corp
•
Filing: 1948-09-25
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Granted: 1951-07-10
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Expires: 1968-09-25
Abstract
No abstract record available.
Inventors
- 👤 William D Hershberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/04; H04N7/045; H03; H03C; H03C3/00; H03C3/02; H03C3/09; H03L; H03L7/00; H03L7/26; H04N5/00; H04N5/04; H04N5/12; H04N5/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2279659A
Cited
US2296919A
Cited
US2299945A
Cited
US2501368A
Cited
US2475074A
Cited
US2462841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |