US3172050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced clipping amplifier
Assignee: AT&T Inc
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Filing: 1961-12-29
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Granted: 1965-03-02
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 James F Ingle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:45
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A BALANCED CLIPPED AMPLIFIER FOR PROVIDING A PAIR OF EQUAL AMPLITUDE OUT-OF PHASE OUTPUT SIGNALS COMPRISING A PAIR OF TRANSISTORS OF SIMILAR CONDUCTIVITY TYPE EACH HAVING AN EMITTER, A COLLECTOR AND A BASE ELECTRODE, A LOAD RESISTANCE CONNECTED IN EACH COLLECTOR PATH, MEANS FOR CONNECTING THE EMITTER ELECTRODES TO EACH OTHER THROUGH A LOW RESISTANCE PATH AND THROUGH A COMMON HIGH RESISTANCE PATH OF A POINT OF REFERENCE POTENTIAL, SAID HIGH RESISTANCE PATH HAVING A RESISTANCE OF THE ORDER OF TWENTY OR MORE TIMES THAT OF EACH LOAD RESISTANCE, MEANS FOR COUPLING AT LEAST A FIRST SIGNAL SOURCE TO THE BASE ELECTRODE OF ONE OF SAID TRANSISTORS, AND MEANS FOR CONTROLLING THE POINT AT WHICH A PREDETERMINED ONE OF SAID TRANSISTORS GOES INTO CURRENT CUTOFF IN RESPONSE TO THE APPLIED SIGNAL FROM SAID FIRST SIGNAL SOURCE.
Claim 2
Dependent Claim
136 words
A BALANCED CLIPPED AMPLIFIER FOR PROVIDING A PAIR OF EQUAL AMPLITUDE OUT-OF PHASE OUTPUT SIGNALS COMPRISING A PAIR OF TRANSISTORS OF SIMILAR CONDUCTIVITY TYPE EACH HAVING AN EMITTER, A COLLECTOR AND A BASE ELECTRODE, A LOAD RESISTANCE CONNECTED IN EACH COLLECTOR PATH, MEANS FOR CONNECTING THE EMITTER ELECTRODES TO EACH OTHER THROUGH A LOW RESISTANCE PATH AND THROUGH A COMMON HIGH RESISTANCE PATH OF A POINT OF REFERENCE POTENTIAL, SAID HIGH RESISTANCE PATH HAVING A RESISTANCE OF THE ORDER OF TWENTY OR MORE TIMES THAT OF EACH LOAD RESISTANCE, MEANS FOR COUPLING AT LEAST A FIRST SIGNAL SOURCE TO THE BASE ELECTRODE OF ONE OF SAID TRANSISTORS, AND MEANS FOR CONTROLLING THE POINT AT WHICH A PREDETERMINED ONE OF SAID TRANSISTORS GOES INTO CURRENT CUTOFF IN RESPONSE TO THE APPLIED SIGNAL FROM SAID FIRST SIGNAL SOURCE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |