Patent US3371230A successfully refreshed from Google Patents.
US3371230A
Expired / Lapsed
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Switching circuits
Assignee: Verizon Laboratories Inc
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Filing: 1964-06-29
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Granted: 1968-02-27
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Hans G Blank
- 👤 Fischman Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:40
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/14; G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/30; G09G2300/00; G09G2300/08; G09G2300/0809; G09G2300/0842; G09G2300/088; G09G2300/0885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3060345A
Cited
US3254267A
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US3171074A
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US3242346A
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US3159755A
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US3246162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |