Passive geophysical exploration device

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Description

FIG. 1 is a front perspective of the passive geophysical exploration device showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a right end elevational view thereof, the left end elevational view being a mirror image thereof.

Referenced Cited
U.S. Patent Documents
D180844 August 1957 Pollakoff
D198025 April 1964 Seabury, Jr. et al.
D222941 February 1972 Knutson
D243960 April 5, 1977 Roch et al.
4438391 March 20, 1984 Rog et al.
Foreign Patent Documents
548396 November 1957 CAX
Other references
  • Electronic Design 2, 1/18/1977, p. 30-Radiometer.
Patent History
Patent number: D287342
Type: Grant
Filed: Apr 20, 1984
Date of Patent: Dec 23, 1986
Assignee: Denver Mineral Exploration Corp. (Littleton, CO)
Inventors: Carl L. Kober (Littleton, CO), H. David Procter-Gregg (Littleton, CO)
Primary Examiner: Louis S. Zarfas
Attorney: Robert C. Dorr
Application Number: 6/602,377
Classifications
Current U.S. Class: Electrical Property (D10/75)