US3077594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doppler navigator land-water corrector
Assignee: General Precision Inc
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Filing: 1960-01-25
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Granted: 1963-02-12
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Michael W Mckay
- 👤 Reed Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:34
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A DEVICE OF THE CLASS DESCRIBED COMPRISING, FREQUENCY TRACKER MEANS HAVING A DOPPLER SPECTRUM OF FREQUENCIES IMPRESSED THEREON AND PRODUCING THEREFROM AN OUTPUT SIGNAL REPRESENTATIVE OF THE CENTER FREQUENCY OF SAID DOPPLER SPECTRUM OF FREQUENCIES, MEANS CONNECTED TO SAID FREQUENCY TRACKER MEANS FOR PRODUCING A LANDWATER SIGNAL THE MAGNITUDE OF WHICH IS PROPORTIONAL TO THE SLOPE OF A SELECTED PORTION OF SAID DOPPLER SPECTRUM, AND MEANS OPERATED BY THE DEPARTURE OF SAID LAND-WATER SIGNAL FROM A PRESELECTED VALUE FOR VARYING SAID OUTPUT SIGNAL BY AN INCREMENTAL AMOUNT OF THE MAGNITUDE OF WHICH IS PROPORTIONED TO THE DEPARTURE OF SAID LAND-WATER SIGNAL FROM SAID PRESELECTED VALUE.
Claim 2
Independent Claim
105 words
A DEVICE OF THE CLASS DESCRIBED COMPRISING, FREQUENCY TRACKER MEANS HAVING A DOPPLER SPECTRUM OF FREQUENCIES IMPRESSED THEREON AND PRODUCING THEREFROM AN OUTPUT SIGNAL REPRESENTATIVE OF THE CENTER FREQUENCY OF SAID DOPPLER SPECTRUM OF FREQUENCIES, MEANS CONNECTED TO SAID FREQUENCY TRACKER MEANS FOR PRODUCING A LANDWATER SIGNAL THE MAGNITUDE OF WHICH IS PROPORTIONAL TO THE SLOPE OF A SELECTED PORTION OF SAID DOPPLER SPECTRUM, AND MEANS OPERATED BY THE DEPARTURE OF SAID LAND-WATER SIGNAL FROM A PRESELECTED VALUE FOR VARYING SAID OUTPUT SIGNAL BY AN INCREMENTAL AMOUNT OF THE MAGNITUDE OF WHICH IS PROPORTIONED TO THE DEPARTURE OF SAID LAND-WATER SIGNAL FROM SAID PRESELECTED VALUE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |