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:
Aug. 13, 1991
Filed:
Oct. 03, 1990
Frederick T Buhler, Providence, RI (US);
Interstate Electronics Corp., Anaheim, CA (US);
Abstract
A method and apparatus for controlling the magnetic field value within a specified volume subject to an external ambient magnetic field wherein the apparatus includes a number of magnetic field generators each associated with one of a number of magnetic sensors. The disposition of the magnetic field generators with respect to one another and to the associated sensors is such that the total effect of current selectively applied to the generators is to produce within the volume a magnetic field in opposition to the ambient external magnetic field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile