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CODING KEYBOARD AND ELECTRICAL SWITCH THEREFOR

申请公布号:CA917572(A)

申请号:CAD917572

申请公布日期:1972.12.26

申请人:
MECHANICAL ENTERPRISES

发明人:ROBERT H. TWYFORD

分类号:H01H13/70;H01H29/00;H04L13/16;(IPC1-7):H01H29/00

主分类号:H01H13/70

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