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. 31, 1993
Filed:
Apr. 29, 1991
Applicant:
Inventor:
Kim Kwee Ng, Stony Brook, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01C / ; G01C / ;
U.S. Cl.
CPC ...
324251 ; 324247 ; 33361 ;
Abstract
A Hall effect device with appropriate electronic circuits can sense a very weak magnetic field and it is thus useful to be used as a compass. It can also be configured as two or more directional indicators as desired.