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:
Apr. 14, 1987
Filed:
Sep. 18, 1985
Applicant:
Inventor:
Jurgen Oelsch, Hohenroth, DE;
Assignee:
Preh Elektrofeinmechanische Werke, Jakob Preh, Nachf. GmbH & Co., Bad Neustadt/Saale, DE;
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338307 ; 29846 ; 338309 ;
Abstract
A plurality of switching points are connected in groups to respective teral contact points via conductor strips on a keyboard printer circuit film. In order to achieve suppression of the coupling capacitances with simple means, decoupling resistor strips are printed between adjacent pairs of the conductor strips and are connected with the said conductor strips. The decoupling resistor strips consist of the same carbon resistor layer material as the terminal contact points.