Patent US3231756A successfully refreshed from Google Patents.
US3231756A
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US
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Voltage comparator incorporating voltage responsive switchable tunnel diode impedance means
Assignee: General Dynamics Corp
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Filing: 1962-09-20
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Granted: 1966-01-25
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Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Martin
- 👤 Niertit Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:56
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; H03K5/2463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2872596A
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US2982887A
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US3049631A
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US3033996A
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US3052852A
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US3098162A
Cited
US3151289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |