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公开(公告)号：US2880857A
公开(公告)日：1959-04-07
申请号：US55588155
申请日：1955-12-28
Applicant: ST REGIS PAPER CO
Inventor： PARSONS WILLARD J , ANDERSON VINCENT R
IPC: B25H3/00
CPC classification number: B25H3/003
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