发明名称 Edge marking device for index cards - includes at least five movable punches to cut set pattern of notches
摘要 <p>Marking device applies filing indicators to the edge of index cards. Several movable punches (3) cut notches into the edge of the index card. The cutting of a notch at the edge is prevented during the hole punching process. The device consists of at least five stamps which are made to cut semi-circular notches or U-shaped notches but other shapes are also possible. The marking device is equipped with stops which permit the insertion of the cards for copying the marking.</p>
申请公布号 DE2730237(A1) 申请公布日期 1979.05.23
申请号 DE19772730237 申请日期 1977.07.05
申请人 BERG,CHRISTOPH,DIPL.-PHYS. 发明人 BERG,CHRISTOPH,DIPL.-PHYS.
分类号 B26F1/04;B42F21/12;G06K21/06;(IPC1-7):42F21/00;26F1/38 主分类号 B26F1/04
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