US3149278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of geophysical prospecting by measuring the earth's magnetic time transients simultaneously in two different directions
Assignee: CROSSLAND LICENSING CORP Ltd
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Filing: 1956-06-29
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Granted: 1964-09-15
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Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 William O Cartier
- 👤 George H Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:34
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF GEOPHYSICAL PROSPECTING COMPRISING MEASURING AT ANY INSTANT AT A POINT WITHIN AN AREA TO BE INVESTIGATED THE RELATIVE INTENSITY OF MAGNETIC TIME TRANSIENTS OF AT LEAST APPROXIMATELY THE SAME FREQUENCY SELECTED WITHIN THE RANGE 1 TO 20,000 C.P.S., MEASURED SIMULTANEOUSLY IN TWO DIFFERENT DIRECTIONS, AND, WHILE MAINTAINING THE SAME RELATIVE RELATIONSHIP IN THE TWO DIRECTIONS OF MEASUREMENT REPEATING SAID RELATIVE INTENSITY MEASUREMENTS IN A PLURALITY OF DIRECTIONS TO DETECT ANY VARIATIONS IN SAID RELATIVE INTENSITY MEASUREMENTS WITH DIRECTION INDICATING POLARIZATION OF SUCH TRANSIENTS, REPEATING SUCH MEASUREMENTS AT OTHER POINTS WITHIN SAID AREA, AND COM-
Claim 2
Independent Claim
97 words
A METHOD OF GEOPHYSICAL PROSPECTING COMPRISING MEASURING AT ANY INSTANT AT A POINT WITHIN AN AREA TO BE INVESTIGATED THE RELATIVE INTENSITY OF MAGNETIC TIME TRANSIENTS OF AT LEAST APPROXIMATELY THE SAME FREQUENCY SELECTED WITHIN THE RANGE 1 TO 20,000 C.P.S., MEASURED SIMULTANEOUSLY IN TWO DIFFERENT DIRECTIONS, AND, WHILE MAINTAINING THE SAME RELATIVE RELATIONSHIP IN THE TWO DIRECTIONS OF MEASUREMENT REPEATING SAID RELATIVE INTENSITY MEASUREMENTS IN A PLURALITY OF DIRECTIONS TO DETECT ANY VARIATIONS IN SAID RELATIVE INTENSITY MEASUREMENTS WITH DIRECTION INDICATING POLARIZATION OF SUCH TRANSIENTS, REPEATING SUCH MEASUREMENTS AT OTHER POINTS WITHIN SAID AREA, AND COM-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |