US3344342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sub-surface prospecting by generating current impulse between a pair of points on a first line and detecting voltages between points along a line normal to thefirst line
Assignee: Individual
•
Filing: 1965-01-08
•
Granted: 1967-09-26
•
Expires: 1985-01-08
Abstract
No abstract record available.
Inventors
- 👤 George F Kinghorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:41
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/02; G01V3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF ELECTRICAL PROSPECTING COMPRISING THE STEPS OF: ESTABLISHING A STEP OR SQUARE-WAVE CURRENT IN THE EARTH BETWEEN A FIRST PAIR OF POINTS ALONG A FIRST LINE, DETECTING THE VARIATION WITH TIME OF THE VOLTAGE ESTABLISHED BY SAID CURRENT BETWEEN A PLURALITY OF PAIRS OF DETECTION POINTS WITH THE PAIRS OF DETECTION POINTS LYING ON A SECOND LINE NORMAL TO SAID FIRST LINE AND PASSING THROUGH ONE OF SAID TRANSMISSION POINTS AND WITH DIFFERENCE DISTANCES BETWEEN THE FIRST LINE AND THE CLOSEST POINT OF EACH PAIR OF DETECTION POINTS; RECORDING THE DETECTED VOLTAGES ESTABLISHED BETWEEN SAID PAIRS OF POINTS BY SAID CURRENT; AND COMPARING THE WAVE FORM OF THE RECORDED VOLTAGES FOR DETERMINING THE VARIATION OF RESISTANCE WITH THE DEPTH IN THE EARTH.
Claim 2
Independent Claim
124 words
THE METHOD OF ELECTRICAL PROSPECTING COMPRISING THE STEPS OF: ESTABLISHING A STEP OR SQUARE-WAVE CURRENT IN THE EARTH BETWEEN A FIRST PAIR OF POINTS ALONG A FIRST LINE, DETECTING THE VARIATION WITH TIME OF THE VOLTAGE ESTABLISHED BY SAID CURRENT BETWEEN A PLURALITY OF PAIRS OF DETECTION POINTS WITH THE PAIRS OF DETECTION POINTS LYING ON A SECOND LINE NORMAL TO SAID FIRST LINE AND PASSING THROUGH ONE OF SAID TRANSMISSION POINTS AND WITH DIFFERENCE DISTANCES BETWEEN THE FIRST LINE AND THE CLOSEST POINT OF EACH PAIR OF DETECTION POINTS; RECORDING THE DETECTED VOLTAGES ESTABLISHED BETWEEN SAID PAIRS OF POINTS BY SAID CURRENT; AND COMPARING THE WAVE FORM OF THE RECORDED VOLTAGES FOR DETERMINING THE VARIATION OF RESISTANCE WITH THE DEPTH IN THE EARTH.
References Cited (Backward Citations)
US1884364A
Cited
US1997163A
Cited
US2189377A
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US2217780A
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US2200096A
Cited
US2192404A
Cited
US2234956A
Cited
US2390270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |