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:
May. 15, 1990
Filed:
May. 10, 1989
Applicant:
Inventors:
Klaus Auslander, Reutlingen, DE;
Hans-Jurgen Fabris, Pfullingen, DE;
Wolfgang Patzwald, Reutlingen, DE;
Helmut Seichter, Pfullingen, DE;
Assignee:
Institut Dr. Forster GmbH & Co. KG, Reutlingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ; G01V / ;
U.S. Cl.
CPC ...
324329 ; 324225 ;
Abstract
A wire loop of almost negligible inductance is coupled with the excitation and receiver coils of metal object detection apparatus which is opened and closed to produce signals in phase with noise signals produced by poorly conductive soils. Enhanced suppression of noise signals is achieved.