US3144623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency generator system
Assignee: TDK Micronas GmbH
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Filing: 1960-02-12
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Granted: 1964-08-11
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Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
- 👤 James W Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:15
CPC Classifications
H; H03; H03B; H03B23/00; G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A STABILIZED SWEEP FREQUENCY GENERATOR SYSTEM COMPRISING A SOURCE OF CONSTANT FREQUENCY SIGNAL, A SOURCE OF VARYING AMPLITUDE SIGNAL COUPLED TO SAID SOURCE OF CONSTANT FREQUENCY SIGNAL TO FREQUENCY MODULATE SAID CONSTANT FREQUENCY SIGNAL TO PRODUCE A SWEEP FREQUENCY SIGNAL, A SOURCE OF STABLE FREQUENCY SIGNAL MIXER MEANS RESPONSIVE TO SAID SWEEP FREQUENCY SIGNAL AND SAID STABLE FREQUENCY SIGNAL TO PRODUCE A VARYING DIFFERENCE FREQUENCY SIGNAL, MEANS INDEPENDENT OF SAID SOURCE OF VARYING AMPLITUDE SIGNAL FOR PRODUCING A COMPARISON SIGNAL VARYING IN ACCORDANCE WITH THE PREDETERMINED VARIATION OF THE DIFFERENCE SIGNAL, MEANS FOR COMPARING SAID COMPARISON SIGNAL AND SAID DIFFERENCE FREQUENCY SIGNAL TO PRODUCE AN ERROR SIGNAL UPON THE OCCURENCE OF AN ERROR IN THE VARIATION OF SAID DIFFERENCE FREQUENCY SIGNAL, AND MEANS TO COUPLE SAID ERROR SIGNAL TO SAID SOURCE OF VARYING AMPLITUDE SIGNAL TO CORRECT FOR SAID ERROR.
Claim 2
Dependent Claim
140 words
A STABILIZED SWEEP FREQUENCY GENERATOR SYSTEM COMPRISING A SOURCE OF CONSTANT FREQUENCY SIGNAL, A SOURCE OF VARYING AMPLITUDE SIGNAL COUPLED TO SAID SOURCE OF CONSTANT FREQUENCY SIGNAL TO FREQUENCY MODULATE SAID CONSTANT FREQUENCY SIGNAL TO PRODUCE A SWEEP FREQUENCY SIGNAL, A SOURCE OF STABLE FREQUENCY SIGNAL MIXER MEANS RESPONSIVE TO SAID SWEEP FREQUENCY SIGNAL AND SAID STABLE FREQUENCY SIGNAL TO PRODUCE A VARYING DIFFERENCE FREQUENCY SIGNAL, MEANS INDEPENDENT OF SAID SOURCE OF VARYING AMPLITUDE SIGNAL FOR PRODUCING A COMPARISON SIGNAL VARYING IN ACCORDANCE WITH THE PREDETERMINED VARIATION OF THE DIFFERENCE SIGNAL, MEANS FOR COMPARING SAID COMPARISON SIGNAL AND SAID DIFFERENCE FREQUENCY SIGNAL TO PRODUCE AN ERROR SIGNAL UPON THE OCCURENCE OF AN ERROR IN THE VARIATION OF SAID DIFFERENCE FREQUENCY SIGNAL, AND MEANS TO COUPLE SAID ERROR SIGNAL TO SAID SOURCE OF VARYING AMPLITUDE SIGNAL TO CORRECT FOR SAID ERROR.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |