United States Patent 3548381
Inventors:
Dirks, Gerhard
Publication Date:
12/15/1970
Assignee:
DIRKS ELECTRONICS CORP
International Classes:
G06F7/36; G06F7/48; G06F17/00; G06Q40/00; G11B5/008; G11B5/016; G11B5/53; G11B5/58; G11B5/82; G11B15/00; G11B17/022; G11B17/32; G11B19/22; G11B21/02; G11B23/03; G11B27/00; G06F7/22; G11B5/012; G06F7/22