US3277379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency generator
Assignee: Rohde and Schwarz GmbH and Co KG
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Filing: 1962-11-02
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Granted: 1966-10-04
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Expires: 1982-11-02
Abstract
No abstract record available.
Inventors
- 👤 Hacks Jakob
- 👤 Flicker Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:51
CPC Classifications
H; H03; H03B; H03B21/00; H03B21/01; H03B21/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
215 words
IN A HETERODYNE RECEIVER: A FIRST CONVERSION OSCILLATOR, SAID OSCILLATOR COMPRISING; A FIRST FIXED FREQUENCY GENERATOR FOR PRODUCING A FIRST STABILIZED FIXED FREQUENCY, A VARIABLE INTERVAL GENERATOR FOR PRODUCING A CONTINUOUSLY VARIABLE INTERVAL FREQUENCY, A FIRST GENERATOR CONNECTED TO SAID FIRST FIXED FREQUENCY GENERATOR AND SAID VARIABLE INTERVAL GENERATOR FOR PRODUCING AN OUTPUT FREQUENCY EQUAL TO THE SUM OR DIFFERENCE OF A HARMONIC OF SAID FIRST STABILIZED FIXED FREQUENCY AND SAID CONTINUOUSLY VARIABLE INTERVAL FREQUENCY, A SECOND FIXED FREQUENCY, A SECOND PRODUCING A SECOND STABILIZED FIXED FREQUENCY, A SECOND GENERATOR CONNECTED TO SAID SECOND FIXED FREQUENCY GENERATOR AND SAID VARIABLE INTERVAL GENERATOR FOR PRODUCING AN OUTPUT FREQUENCYL EQUAL TO THE SUM OR DIFFERENCE OF A HARMONIC OF SAID STABILIZED FIXED FREQUENCY AND SAID CONTINUOUSLY VARIABLE INTERVAL FREQUENCY, A SINGLE INTERVAL OSCILLATOR HAVING A SINGLE SCALE FOR PRODUCING AN OUTPUT FREQUENCY, SELECTING MEANS FOR CHANGING THE RANGE OF SAID SCALE BY PREDETERMINED FACTOR, A FREQUENCY DIVIDER CONNECTED TO SAID INTERVAL OSCILLATOR FOR DIVIDING THE VARIABLE INTERVAL OSCILLATOR FREQUENCY BY THE PREDETERMINED FACTOR, AND PROVIDING THAT DIVIDED FREQUENCY TO SAID SECOND GENERATOR, AND A SWITCHING MEANS TO SELECTIVELY CONNECT EITHER SAID INTERVAL OSCILLATOR OR THE OUTPUT FREQUENCY OF SAID SECOND GENERATOR TO SAID FIRST GENERATOR SO AS TO PROVIDE SAID FIRST GENERATOR WITH A VARIABLE INTERVAL FREQUENCY.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |