US3555408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for airborne electromagnetic exploration utilizing the resultant transmitted electromagnetic field comprised of the primary field and secondary fields generated thereby in the aircraft
Assignee: SOTELCOM COMMUNICATIONS Inc
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Filing: 1968-12-09
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Granted: 1971-01-12
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Expires: 1988-12-09
Abstract
Abstract A METHOD AND APPARATUS FOR AIRBORNE GEOPHYSICAL PROSPECTING UTILIZING THE DETECTION OF ELECTROMAGNETIC FIELD COMPONENTS IN QUADRATURE WITH THE RESULTANT TRANSMITTED FIELD TRANSMITTED FROM AN AIRCRAFT WHICH TRANSMITTED FIELD COMPRISES THE VECTOR SUM OF THE PRIMARY ELECTROMAGNETIC FIELD CREATED IN THE TRANSMITTER IN THE AIRCRAFT AND THE SECONDARY FIELDS CREATED BY THE LINKING OF SUCH PRIMARY FIELD WITH THE CONDUCTOR COMPONENTS OF THE AIRCRAFT, THE EXISTENCE OF FIELD COMPONENTS IN QUADRATURE WITH SUCH RESULTANT TRANSMITTED FIELD INDICATING THE PRESENCE OF A CONDUCTOR ANOMALY OUTSIDE THE AIRCRAFT.
Inventors
- 👤 William A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/15; G01V3/165
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |