US3235753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serial driven two transistor switch circuit
Assignee: AT&T Inc
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Filing: 1963-10-28
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Granted: 1966-02-15
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilmer B Gaunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:29
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/601
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A SWITCH CIRCUIT COMPRISING FIRST AND SECOND TRANSISTORS EACH HAVING EMITTER, BASE AND COLLECTOR ELECTRODES, DRIVING MEANS HAVING AN INPUT AND TWO OUTPUT CIRCUITS, AND MEANS FOR ELECTRICALLY CONNECTING IN SERIES SAID TWO OUTPUT CIRCUITS AND THE BASE-EMITTER JUNCTION OF EACH OF SAID FIRST AND SECOND TRANSISTORS.
References Cited (Backward Citations)
US3120616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |