US3332019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for measuring electromagnetic field intensity
Assignee: Alcatel CIT SA
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Filing: 1964-02-10
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Granted: 1967-07-18
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Leostic Joseph
- 👤 Babany Lucien
- 👤 Cabet Alain
- 👤 Selz Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:00
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/08; G01R29/0864; G01R29/0871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
240 words
IN A DEVICE FOR MEASURING THE INTENSITY OF A RADIOWAVE RECEIVED ON AERIAL, ONE AERIAL, A FIRST SET OF BANDPASS FILTERS, EACH TUNED TO A DIFFERENT FREQUENCY RANGE, A FIRST ELEMENT OF A MULTIPLE-ELEMENT SWITCH MAKING IT POSSIBLE TO CONNECT THE AERIAL TO THE INPUT OF ANY ONE OF THE SAID FILTERS RELATING TO THE FIRST SET, A SECOND ELEMENT OF THE SAID SWITCH MAKING IT POSSIBLE TO CONNECT THE OUTPUT OF THE SAID FILTER TO THE INPUT OF AN AMPLIFIER INCORPORATING MEANS OF GAIN CONTROL, A SECOND SET OF BANDPASS FILTERS TUNED RESPECTIVELY TO THE SAME FREQUENCY BANDS AS THE FILTERS OF THE FIRST BAND-PASS FILTER SET, A THIRD ELEMENT OF THE SAID SWITCH MAKING IT POSSIBLE TO CONNECT THE OUTPUT OF THE SAID AMPLIFIER TO THE INPUT OF ANY ONE OF THE BAND-PASS FILTERS RELATING TO THE SAID SECOND BANDPASS FILTER SET, A FOURTH ELEMENT OF THE SAID SWITCH MAKING IT POSSIBLE TO CONNECT THE OUTPUT OF THE SAID BAND-PASS FILTER RELATING TO THE SECOND BAND-PASS FILTER SET TO THE INPUT OF A CALIBRATED ADJUSTABLE ATTENUATION NETWORK WHOSE OUTPUT IS CONNECTED TO THE INPUT OF A RECEIVING SET COMPRISING AT LEAST ONE FREQUENCY-CHANGER STAGE, THE SAID FREQUENCY CHANGER STAGE BEING FED BY A LOCAL OSCILLATOR SUPPLYING A CARRIER CURRENT WHOSE FREQUENCY IS ADJUSTABLE IN RANGES BY MEANS OF A FIFTH ELEMENT OF SAID SWITCH, AND A DETECTOR AND A GALVANOMETER CONNECTED TO THE OUTPUT OF THE RECEIVING SET.
Claim 2
Dependent Claim
240 words
IN A DEVICE FOR MEASURING THE INTENSITY OF A RADIOWAVE RECEIVED ON AERIAL, ONE AERIAL, A FIRST SET OF BANDPASS FILTERS, EACH TUNED TO A DIFFERENT FREQUENCY RANGE, A FIRST ELEMENT OF A MULTIPLE-ELEMENT SWITCH MAKING IT POSSIBLE TO CONNECT THE AERIAL TO THE INPUT OF ANY ONE OF THE SAID FILTERS RELATING TO THE FIRST SET, A SECOND ELEMENT OF THE SAID SWITCH MAKING IT POSSIBLE TO CONNECT THE OUTPUT OF THE SAID FILTER TO THE INPUT OF AN AMPLIFIER INCORPORATING MEANS OF GAIN CONTROL, A SECOND SET OF BANDPASS FILTERS TUNED RESPECTIVELY TO THE SAME FREQUENCY BANDS AS THE FILTERS OF THE FIRST BAND-PASS FILTER SET, A THIRD ELEMENT OF THE SAID SWITCH MAKING IT POSSIBLE TO CONNECT THE OUTPUT OF THE SAID AMPLIFIER TO THE INPUT OF ANY ONE OF THE BAND-PASS FILTERS RELATING TO THE SAID SECOND BANDPASS FILTER SET, A FOURTH ELEMENT OF THE SAID SWITCH MAKING IT POSSIBLE TO CONNECT THE OUTPUT OF THE SAID BAND-PASS FILTER RELATING TO THE SECOND BAND-PASS FILTER SET TO THE INPUT OF A CALIBRATED ADJUSTABLE ATTENUATION NETWORK WHOSE OUTPUT IS CONNECTED TO THE INPUT OF A RECEIVING SET COMPRISING AT LEAST ONE FREQUENCY-CHANGER STAGE, THE SAID FREQUENCY CHANGER STAGE BEING FED BY A LOCAL OSCILLATOR SUPPLYING A CARRIER CURRENT WHOSE FREQUENCY IS ADJUSTABLE IN RANGES BY MEANS OF A FIFTH ELEMENT OF SAID SWITCH, AND A DETECTOR AND A GALVANOMETER CONNECTED TO THE OUTPUT OF THE RECEIVING SET.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |