Filing Date: 01/22/1975 Export Citation: Click for automatic bibliography generation Assignee: International Business Machines Corporation Primary Class: 400/279 Other Classes: 400/2, 400/3, 400/76 International Classes: B41J29/50; B41J5/30; B41J21/00; B41J21/14; B41J25/18; G06F3/12; G...