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专利名称：Perforation assemblies having variable cut
to tie ratios for multi- ply forms
发明人：James B. Coffey申请号：US08/711355申请日：19960905公开号：US06035753A公开日：20000314
摘要：A multi-blade perforation assembly having either rotary or straight bladesprovides adjustable, small cut and tie ratios for multi- ply forms without diminishing thequality or reliability of the forms.
申请人：NCR CORPORATION
代理人：Charlene Stukenborg
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