US3074026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable attenuation sharp notch filter
Assignee: ENTRON Inc
•
Filing: 1960-05-24
•
Granted: 1963-01-15
•
Expires: 1980-05-24
Abstract
No abstract record available.
Inventors
- 👤 Kuzminsky Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:18
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/4446; H03; H03H; H03H7/00; H03H7/01; H03H7/06; H03H7/17; H03H7/1716; H03H7/1725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
IN A BROAD-BAND TRANSMISSION LINE, MEANS FOR MAINTAINING A PREDETERMINED RELATION BETWEEN A BROAD FREQUENCY BAND OF SIGNALS TRANSMITTED ON SAID LINE AND A NARROW BAND OF SIGNALS TRANSMITTED ON SAID LINE, SAID MEANS COMPRISING BROAD-BAND AMPLIFIER MEANS CONNECTED TO SAID LINE FOR AMPLIFYING BOTH BANDS OF SIGNALS, AGC MEANS CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS FOR CONTROLLING THE GAIN OF SAID AMPLIFYING MEANS AT SAID BROAD BAND OF FREQUENCIES, FURTHER AGC MEANS ALSO CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS AND PRODUCING AN OUTPUT VOLTAGE WHICH IS A FUNCTION OF THE GAIN OF SAID AMPLIFIER AT SAID NARROW BAND OF FREQUENCIES, FILTER MEANS IN SAID TRANSMISSION LINE TUNED TO SAID NARROW BAND AND HAVING VOLTAGE-CONTROLLED VARIABLE ATTENUATION MEANS FOR VARYING THE ATTENUATION OF SAID FILTER MEANS IN SAID NARROW BAND, AND CIRCUIT MEANS CONNECTING SAID OUTPUT VOLTAGE TO SAID VARIABLE ATTENUATION MEANS TO CONTROL THE ATTENUATION THEREOF TO MAINTAIN THE DESIRED PREDETERMINED RELATION.
Claim 2
Dependent Claim
157 words
IN A BROAD-BAND TRANSMISSION LINE, MEANS FOR MAINTAINING A PREDETERMINED RELATION BETWEEN A BROAD FREQUENCY BAND OF SIGNALS TRANSMITTED ON SAID LINE AND A NARROW BAND OF SIGNALS TRANSMITTED ON SAID LINE, SAID MEANS COMPRISING BROAD-BAND AMPLIFIER MEANS CONNECTED TO SAID LINE FOR AMPLIFYING BOTH BANDS OF SIGNALS, AGC MEANS CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS FOR CONTROLLING THE GAIN OF SAID AMPLIFYING MEANS AT SAID BROAD BAND OF FREQUENCIES, FURTHER AGC MEANS ALSO CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS AND PRODUCING AN OUTPUT VOLTAGE WHICH IS A FUNCTION OF THE GAIN OF SAID AMPLIFIER AT SAID NARROW BAND OF FREQUENCIES, FILTER MEANS IN SAID TRANSMISSION LINE TUNED TO SAID NARROW BAND AND HAVING VOLTAGE-CONTROLLED VARIABLE ATTENUATION MEANS FOR VARYING THE ATTENUATION OF SAID FILTER MEANS IN SAID NARROW BAND, AND CIRCUIT MEANS CONNECTING SAID OUTPUT VOLTAGE TO SAID VARIABLE ATTENUATION MEANS TO CONTROL THE ATTENUATION THEREOF TO MAINTAIN THE DESIRED PREDETERMINED RELATION.
References Cited (Backward Citations)
US2304545A
Cited
US2676308A
Cited
US2567380A
Cited
FR1056808A
Cited
US2866015A
Cited
US2902548A
Cited
US2946017A
Cited
US2915711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |