US3173138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
F.m. continuous wave radar system
Assignee: TDK Micronas GmbH
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Filing: 1959-03-12
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Granted: 1965-03-09
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Erst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:50
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2206; F41G7/2246; F41G7/2273; F41G7/2286; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S13/342
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A MISS DISTANCE INDICATOR SYSTEM COMPRISING: A SOURCE OF PERIODICALLY VARYING SIGNALS; MEANS FOR FREQUENCY MODULATING A CARRIER FREQUENCY WITH SAID VARYING SIGNALS; MEANS FOR TRANSMITTING THE FREQUENCY MODULATED SIGNAL; MEANS FOR RECEIVING SAID FREQUENCY MODULATED SIGNAL REFLECTED FROM A DISTANCE OBJECT; MEANS FOR MIXING THE RECEIVED SIGNAL AND A PORTION OF THE TRANSMITTED SIGNAL; MEANS FOR SEPARATING AT LEAST THREE PAIRS OF ADJACENT SIDE BANDS CONTAINED IN THE OUTPUT FROM SAID MIXING MEANS;
Claim 2
Dependent Claim
74 words
A MISS DISTANCE INDICATOR SYSTEM COMPRISING: A SOURCE OF PERIODICALLY VARYING SIGNALS; MEANS FOR FREQUENCY MODULATING A CARRIER FREQUENCY WITH SAID VARYING SIGNALS; MEANS FOR TRANSMITTING THE FREQUENCY MODULATED SIGNAL; MEANS FOR RECEIVING SAID FREQUENCY MODULATED SIGNAL REFLECTED FROM A DISTANCE OBJECT; MEANS FOR MIXING THE RECEIVED SIGNAL AND A PORTION OF THE TRANSMITTED SIGNAL; MEANS FOR SEPARATING AT LEAST THREE PAIRS OF ADJACENT SIDE BANDS CONTAINED IN THE OUTPUT FROM SAID MIXING MEANS;
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |