US3134104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passively determining the distance to the source of an external field
Assignee: Individual
•
Filing: 1961-10-30
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Granted: 1964-05-19
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 Francis J Murphree
- 👤 Henry L Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:07
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF DETERMINING, FROM A RELATIVELY REMOTE DETECTING POINT, THE DISTANCE TO THE SOURCE OF AN EXTERNAL FIELD OF KNOWN CHARACTERISTICS, COMPRISING THE STEPS OF DETECTING THE VALUE OF THE EXTERNAL FIELD AS SUCH DETECTING POINT, DETECTING THE VALUE OF THE EXTERNAL FIELD AT A DETECTING POINT ADJACENT TO SAID SUCH DETECTING POINT AND SPACED THEREFROM A KNOWN DISTANCE S ON THE LINE DEFINED BY SAID SOURCE AND SAID SUCH DETECTING POINT, DERIVING FROM SAID DETECTIONS SEPARATE ELECTRIC SIGNALS HAVING MAGNITUDES RESPECTIVELY REPRESENTATIVE OF THE VALUES OF SAID FIELD AT SAID DETECTING POINTS, SUBSTRACTING ONE OF SAID SIGNALS FROM THE OTHER SIGNAL TO DERIVE A DIFFERENCE SIGNAL, AND
Claim 2
Independent Claim
109 words
THE METHOD OF DETERMINING, FROM A RELATIVELY REMOTE DETECTING POINT, THE DISTANCE TO THE SOURCE OF AN EXTERNAL FIELD OF KNOWN CHARACTERISTICS, COMPRISING THE STEPS OF DETECTING THE VALUE OF THE EXTERNAL FIELD AS SUCH DETECTING POINT, DETECTING THE VALUE OF THE EXTERNAL FIELD AT A DETECTING POINT ADJACENT TO SAID SUCH DETECTING POINT AND SPACED THEREFROM A KNOWN DISTANCE S ON THE LINE DEFINED BY SAID SOURCE AND SAID SUCH DETECTING POINT, DERIVING FROM SAID DETECTIONS SEPARATE ELECTRIC SIGNALS HAVING MAGNITUDES RESPECTIVELY REPRESENTATIVE OF THE VALUES OF SAID FIELD AT SAID DETECTING POINTS, SUBSTRACTING ONE OF SAID SIGNALS FROM THE OTHER SIGNAL TO DERIVE A DIFFERENCE SIGNAL, AND
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |