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. 26, 1977
Filed:
May. 27, 1975
Applicant:
Inventors:
Juergen Meyer, Taunusstein, DT;
Irmtrud Wendling, Wiesbaden, DT;
Assignee:
Heimann GmbH, , DT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G06K / ;
U.S. Cl.
CPC ...
3401 / ; 235 / ;
Abstract
A manipulatable read-only memory, particularly a punched card read device, having conductor paths comprising row and column conductors, disposed in a matrix formation in the manner of a cross-bar distributor, adapted to be operatively connected at their respective intersections by a corresponding photo-resistor and a rectifier containing a blocking contact, which are connected in series with the blocking contact being formed directly on one of the two conductors.