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. 19, 1977
Filed:
Dec. 24, 1975
Applicant:
Inventors:
Ralph Emil Beastrom, Rochester, MN (US);
Arlen John Bowen, Rochester, MN (US);
Ronald James Keller, Rochester, MN (US);
David George Nutt, Dodge Center, MN (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; G06K / ; H01J / ;
U.S. Cl.
CPC ...
250553 ; 250569 ; 250578 ;
Abstract
A document card reader including a row of light sources transmitting light through a corresponding series of column-like cavities within a pair of members between which a document card with punched openings therethrough may move and a convex lens placed so as to receive light transmitted through the document card openings and transmit the light from all of the openings to a photodetector positioned at substantially the focal point of the lens.