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公开(公告)号：US3531311A
公开(公告)日：1970-09-29
申请号：US3531311D
申请日：1967-10-31
Applicant: APYRCO INC
Inventor： PRIOR WILLIAM L
CPC classification number: B05D1/327 , B05B15/045 , B05D1/32
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