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公开(公告)号：US1143244A
公开(公告)日：1915-06-15
申请号：US1912714658
申请日：1912-08-12
Applicant: WILSON JENNIE
Inventor： WILSON JENNIE
CPC classification number: E04D13/076 , B01D29/07 , B01D2201/306
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