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Patent US3197773A successfully refreshed from Google Patents.
US3197773A
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Frequency modulated continuous wave navigation radar
Assignee: Unisys Corp
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Filing: 1962-04-19
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Granted: 1965-07-27
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Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 Stanley H Black
- 👤 Littler Donald
- 👤 Smith P Gene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:25
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/583; G01S13/584; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S13/347; G01S13/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
RADAR APPARATUS COMPRISING MEANS FOR TRANSMITTING A DOUBLY FREQUENCY MODULATED CARRIER WAVE TOWARD A REFLECTING OBJECT, MEANS FOR HETERODYING SIGNALS REFLECTED FROM SAID OBJECT WITH SAID WAVE TO PRODUCE A BEAT NOTE HAVING A FREQUENCY MODULATED COMPONENT WHOSE MEANS FREQUENCY AND FREQUENCY MODDULATION INDEX ARE RELATED TO THE VELOCITY AND RANGE, RESPECTIVELY, OF SAID OBJECT RELATIVE TO SAID RADAR APPARATUS,
Claim 2
Dependent Claim
60 words
RADAR APPARATUS COMPRISING MEANS FOR TRANSMITTING A DOUBLY FREQUENCY MODULATED CARRIER WAVE TOWARD A REFLECTING OBJECT, MEANS FOR HETERODYING SIGNALS REFLECTED FROM SAID OBJECT WITH SAID WAVE TO PRODUCE A BEAT NOTE HAVING A FREQUENCY MODULATED COMPONENT WHOSE MEANS FREQUENCY AND FREQUENCY MODDULATION INDEX ARE RELATED TO THE VELOCITY AND RANGE, RESPECTIVELY, OF SAID OBJECT RELATIVE TO SAID RADAR APPARATUS,
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |