US3205443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interfering signal resolving system
Assignee: GEN ELECTRONIC LAB Inc
•
Filing: 1961-06-26
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Granted: 1965-09-07
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Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 David R Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
H; H04; H04K; H04K3/00; H04K3/20; H04K3/22; H04K3/224; H04K3/228
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A FREQUENCY MODULATION RECEIVER COMPRISING AN INTERMEDIATE FREQUENCY AMPLIFIER, A TRACKING ATTENUATOR FOR ATTENUATING SIGNALS OF A FREQUENCY DETERMINED BY THE INTENSITY OF A TRACKING CONTROL VOLTAGE, DEMODULATOR MEANS WITH AN INPUT COUPLED TO THE INTERMEDIATE FREQUENCY AMPLIFIER AND OUTPUT COUPLED TO THE TRACKING ATTENUATOR FOR SUPPLYING SAID TRACKING CONTROL VOLTAGE, AND MEANS COUPLED TO THE INTERMEDIATE FREQUENCY AMPLIFIER FOR SUPPLYING THE SIGNALS FROM SAID INTERMEDIATE FREQUENCY AMPLIFIER TO THE TRACKING ATTENUATOR.
Claim 2
Dependent Claim
72 words
A FREQUENCY MODULATION RECEIVER COMPRISING AN INTERMEDIATE FREQUENCY AMPLIFIER, A TRACKING ATTENUATOR FOR ATTENUATING SIGNALS OF A FREQUENCY DETERMINED BY THE INTENSITY OF A TRACKING CONTROL VOLTAGE, DEMODULATOR MEANS WITH AN INPUT COUPLED TO THE INTERMEDIATE FREQUENCY AMPLIFIER AND OUTPUT COUPLED TO THE TRACKING ATTENUATOR FOR SUPPLYING SAID TRACKING CONTROL VOLTAGE, AND MEANS COUPLED TO THE INTERMEDIATE FREQUENCY AMPLIFIER FOR SUPPLYING THE SIGNALS FROM SAID INTERMEDIATE FREQUENCY AMPLIFIER TO THE TRACKING ATTENUATOR.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |