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公开(公告)号：US2976839A
公开(公告)日：1961-03-28
申请号：US53114255
申请日：1955-08-29
Applicant: D & S PROC COMPANY INC
Inventor： CLARENCE OKMA , HENRY UDES , DONAHUE EDWIN L
IPC: D04H11/00
CPC classification number: D04H11/00
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