Patent US4908572A successfully refreshed from Google Patents.
US3271691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation monitor circuit including amplifier
Assignee: General Electric Co
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Filing: 1961-05-08
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Granted: 1966-09-06
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Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 Harry H Hendon
- 👤 Louis D Test
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:46
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/17; G01T1/18; H; H03; H03F; H03F1/00; H03F1/34; H03F2200/00; H03F2200/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A DOUBLET TRANSISTOR AMPLIFIER WHICH COMPRISES A FIRST AND A SECOND STAGE HAVING TRANSISTORS OF OPPOSITE POLARITY AND EACH CONNECTED IN A COMMON EMITTER CONFIGURATION, THE COLLECTOR OF SAID FIRST STAGE BEING DIRECTLY CONNECTED WITHOUT ANY INTERVENING IMPEDANCE ELEMENTS TO THE BASE OF THE SECOND STAGE AND HAVING TERMINALS CONNECTING SAID DOUBLET AMPLIFIER TO A SOURCE OF OPERATING POTENTIAL, A FIRST RESISTANCE CONNECTED BETWEEN SAID TERMINALS, A SIGNAL INPUT TERMINAL CONNECTED TO AN INTERMEDIATE POINT ON SAID FIRST RESISTANCE AND TO THE BASE OF SAID FIRST STAGE, A SIGNAL OUTPUT TERMINAL CONNECTED TO THE COLLECTOR OF SAID
Claim 2
Dependent Claim
97 words
A DOUBLET TRANSISTOR AMPLIFIER WHICH COMPRISES A FIRST AND A SECOND STAGE HAVING TRANSISTORS OF OPPOSITE POLARITY AND EACH CONNECTED IN A COMMON EMITTER CONFIGURATION, THE COLLECTOR OF SAID FIRST STAGE BEING DIRECTLY CONNECTED WITHOUT ANY INTERVENING IMPEDANCE ELEMENTS TO THE BASE OF THE SECOND STAGE AND HAVING TERMINALS CONNECTING SAID DOUBLET AMPLIFIER TO A SOURCE OF OPERATING POTENTIAL, A FIRST RESISTANCE CONNECTED BETWEEN SAID TERMINALS, A SIGNAL INPUT TERMINAL CONNECTED TO AN INTERMEDIATE POINT ON SAID FIRST RESISTANCE AND TO THE BASE OF SAID FIRST STAGE, A SIGNAL OUTPUT TERMINAL CONNECTED TO THE COLLECTOR OF SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |