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公开(公告)号：US1347999A
公开(公告)日：1920-07-27
申请号：US36903320
申请日：1920-03-26
Applicant: JACOB ELSON
Inventor： JACOB ELSON
IPC: A41B3/08
CPC classification number: A41B3/08 , Y10T24/44932
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