The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1976
Filed:
Mar. 19, 1975
Applicant:
Inventors:
Carlton M Slough, Richmond, VA (US);
Edward B Selden, III, Richmond, VA (US);
Assignee:
Texaco Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
324-3 ; 324 67 ;
Abstract
A locator for buried metallic pipes which carry AC signals impressed as a result of various industrial activities. It employs a pick-up coil with a ferromagnetic core. The coil is connected to a tuned bandpass amplifier that has its output connected to a head set and a meter for detecting the amplitude of the signals developed.