US3213453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital direction finder utilizing binary array
Assignee: General Dynamics Corp
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Filing: 1963-05-07
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Granted: 1965-10-19
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Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert F Morrison
- 👤 Morton N Sarachan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:55
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/04; G01S3/043; G01S3/14; G01S3/46; G01S3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A DEVICE FOR INDICATING THE TRUE BEARING OF A TARGET EMITTING ELECTROMAGNETIC WAVE ENERGY OF A PREDETERMINED FREQUENCY COMPRISING AN AZIMUTH SENSING SYSTEM INCLUDING AT LEAST ONE PLURALITY OF PAIRS OF SPACED ANTENNAS FOR DERIVING A FIRST DISTINCTIVE BINARY CODE WHICH DEPENDS UPON THE AZIMUTH OF SAID TARGET AS WELL AS UPON THE FREQUENCY OF ENERGY EMANATING FROM SAID TARGET, A FREQUENCY SENSING SYSTEM FOR DERIVING A SECOND DISTINCTIVE BINARY CODE REPRESENTATIVE OF THE FREQUENCY OF ENERGY FROM SAID TARGET; AND CORRELATION MEANS RESPONSIVE TO SAID FIRST AND SECOND BINARY CODES FOR PROVIDING AN OUTPUT INDICATIVE OF THE TRUE BEARING OF SAID TARGET.
Claim 2
Independent Claim
103 words
A DEVICE FOR INDICATING THE TRUE BEARING OF A TARGET EMITTING ELECTROMAGNETIC WAVE ENERGY OF A PREDETERMINED FREQUENCY COMPRISING AN AZIMUTH SENSING SYSTEM INCLUDING AT LEAST ONE PLURALITY OF PAIRS OF SPACED ANTENNAS FOR DERIVING A FIRST DISTINCTIVE BINARY CODE WHICH DEPENDS UPON THE AZIMUTH OF SAID TARGET AS WELL AS UPON THE FREQUENCY OF ENERGY EMANATING FROM SAID TARGET, A FREQUENCY SENSING SYSTEM FOR DERIVING A SECOND DISTINCTIVE BINARY CODE REPRESENTATIVE OF THE FREQUENCY OF ENERGY FROM SAID TARGET; AND CORRELATION MEANS RESPONSIVE TO SAID FIRST AND SECOND BINARY CODES FOR PROVIDING AN OUTPUT INDICATIVE OF THE TRUE BEARING OF SAID TARGET.
References Cited (Backward Citations)
US2840812A
Cited
US3039094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |