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:
Mar. 14, 1978
Filed:
Feb. 24, 1976
Applicant:
Inventors:
Willis Thompson Lawrence, Winchester, MA (US);
David B Spaulding, Carlisle, MA (US);
Assignee:
Novatek, Inc., Burlington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
328-5 ; 307309 ; 307264 ; 328167 ;
Abstract
An automatic vehicle monitoring system utilizing a plurality of spaced magnetic fields disposed along a vehicle path. A vehicle mounted sensor produces electrical signals in response to the presence of the magnetic fields. These signals are processed to discriminate against noise and to extract therefrom information concerning the location of the vehicle.