Patent US2907957A successfully refreshed from Google Patents.
US2907957A
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Electrically variable delay line
Assignee: Cgs Lab Inc
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Filing: 1952-12-31
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Granted: 1959-10-06
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Expires: 1972-12-31
Abstract
No abstract record available.
Inventors
- 👤 Gerhard H Dewitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:41
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/023; H03; H03H; H03H7/00; H03H7/30; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2024234A
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US2226728A
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US2306555A
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US2569309A
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US2527608A
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US2495740A
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US2470893A
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US2565231A
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US2504178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |