US2928955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase comparison circuits
Assignee: RCA Corp
•
Filing: 1955-02-01
•
Granted: 1960-03-15
•
Expires: 1975-02-01
Abstract
No abstract record available.
Inventors
- 👤 Gerald B Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:19
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/44; H04N9/455; H03; H03D; H03D13/00; H03D13/007; H03D13/008; H03D2200/00; H03D2200/0001; H03D2200/0009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2582596A
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US2617858A
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US2744198A
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US2698592A
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US2788493A
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US2705287A
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US2799784A
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US2783384A
Cited
US2827611A
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US2764687A
Cited
US2770728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |