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. 09, 1999
Filed:
Nov. 07, 1997
Hagen Friedrich, Essen, DE;
Kiekert AG, Heiligenhaus, DE;
Abstract
A motor vehicle door lock has a key operated lock cylinder signalling antitheft and locking-and-unlocking positions via Hall effect chips which include electronic circuitry working into evaluation circuitry connected to the chips. The chips themselves can be selected from a series of mass produced chips based on criteria including the magnetic thresholds and electrical thresholds of the chips provided that the thresholds of the evaluation circuitry are selected appropriately matching of each chip or its Hall effect element to the system is thoroughly avoided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile