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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4877790
Kind Code:
U
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JP5952052Perforation device
Application Number:
JP12163371U
Publication Date:
September 25, 1973
Filing Date:
December 24, 1971
Export Citation:
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International Classes:
B23B41/00; B23B41/08; F17C13/04; F17C13/12; (IPC1-7): B23B41/08; F17C13/12



 
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