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公开(公告)号：US2415391A
公开(公告)日：1947-02-04
申请号：US46290642
申请日：1942-10-22
Applicant: BECKWITH MFG CO
Inventor： LOVELL STANLEY P , LEHMBERG WILLIAM H
CPC classification number: A62B18/025 , B29D99/0071 , B29L2031/4835 , D21J7/00 , Y10S264/52
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