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:
May. 24, 1977
Filed:
Aug. 14, 1975
Applicant:
Inventor:
Robert H Trenkamp, Cleveland Heights, OH (US);
Assignee:
Addressograph Multigraph Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06K / ; G06K / ; H04Q / ;
U.S. Cl.
CPC ...
235 / ; 235151 ; 3401 / ; 356 71 ;
Abstract
A transaction terminal system is provided including means which prevent the utilization of certain tapped-line data. Security data, such as personal identification numbers or card security codes, is allowed to be distorted by each terminal in a manner which varies from terminal to terminal within the system and is corrected for at the data processor or other appropriate location in a manner specified for the particular terminal sending the data.