Invention Grant
US08127651B2 Multi-pattern material punch 失效
多图案材料冲孔

Multi-pattern material punch
Abstract:
A system for punching one or more patterns selected from a plurality of related patterns into a workpiece (typically paper or similar materials). The system comprises a punch element having a plurality of cutting surfaces arranged at discrete heights relative to each other, and a means for selecting a discrete distance that the punch element travels through the workpiece.
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