Patent US3084291A successfully refreshed from Google Patents.
US3084291A
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Circuit-arrangement for push-pull frequency demodulation or phase comparison
Assignee: US Philips Corp
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Filing: 1958-05-07
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Granted: 1963-04-02
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Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 Marcel Antoine Arnold Gh Marie
- 👤 Volkers Hendrik
- 👤 Rosier Gerardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:09
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/04; H04N5/12; H04N5/126; G; G01; G01R; G01R23/00; G01R25/00; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/14; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3052; H03G3/34; H03G3/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A DISCRIMINATOR NETWORK CIRCUIT ARRANGEMENT FOR DETECTING WAVELENGTH VARIATIONS OF A FIRST SIGNAL RELATIVE TO A GIVEN FREQUENCY VALUE, COMPRISING INDUCTANCE AND CAPACITANCE ELEMENTS CONNECTED IN SERIES RELATIONSHIP, SAID ELEMENTS HAVING VALUES PRODUCING A CIRCUIT SERIES RESONANT AT SAID GIVEN FREQUENCY, TWO TRANSISTORS EACH HAVING EMITTER, BASE AND COLLECTOR ELECTRODES DEFINING AN EMITTERBASE PATH AND A COLLECTOR-BASE PATH, MEANS FOR CONNECTING THE EMITTER-BASE PATHS OF SAID TRANSISTORS IN SAID SERIES CIRCUIT IN PHASE OPPOSITION, MEANS FOR APPLYING SAID FIRST SIGNAL IN THE SAME PHASE TO THE EMITTER-BASE PATHS OF SAID
Claim 2
Dependent Claim
90 words
A DISCRIMINATOR NETWORK CIRCUIT ARRANGEMENT FOR DETECTING WAVELENGTH VARIATIONS OF A FIRST SIGNAL RELATIVE TO A GIVEN FREQUENCY VALUE, COMPRISING INDUCTANCE AND CAPACITANCE ELEMENTS CONNECTED IN SERIES RELATIONSHIP, SAID ELEMENTS HAVING VALUES PRODUCING A CIRCUIT SERIES RESONANT AT SAID GIVEN FREQUENCY, TWO TRANSISTORS EACH HAVING EMITTER, BASE AND COLLECTOR ELECTRODES DEFINING AN EMITTERBASE PATH AND A COLLECTOR-BASE PATH, MEANS FOR CONNECTING THE EMITTER-BASE PATHS OF SAID TRANSISTORS IN SAID SERIES CIRCUIT IN PHASE OPPOSITION, MEANS FOR APPLYING SAID FIRST SIGNAL IN THE SAME PHASE TO THE EMITTER-BASE PATHS OF SAID
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |