Patent US3603813A successfully refreshed from Google Patents.
US3603813A
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Field effect transistor as a buffer for a small signal circuit
Assignee: United States Atomic Energy Commission
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Filing: 1969-12-03
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Granted: 1971-09-07
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Expires: 1989-12-03
Abstract
Abstract A field effect transistor having its drain and gate electrodes connected across a large signal generator and its source and gate electrodes connected across the input of a small signal circuit for protecting the circuit from high level signal variations at the generator.
Inventors
- 👤 James N Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/08; H03K17/081; H03K17/0812; H03K17/08126
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
The logic element and protective circuit of claim 1, wherein said field effect transistor is of the N-channel-type said microcircuit transistor is an NPN transistor, said signal generator produces positive going signals, said corresponding low level signals in said output circuit are positive going, and said signals produced at the output connection of said microcircuit are negative going.
References Cited (Backward Citations)
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US3369129A
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US3489919A
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US3408511A
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US3444397A
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US3524074A
Cited
US3502903A
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US3521087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |