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公开(公告)号：US2298157A
公开(公告)日：1942-10-06
申请号：US39945941
申请日：1941-06-24
Applicant: LEA PHILLIPS OLGA
Inventor： LEA PHILLIPS OLGA
IPC: A61H7/00
CPC classification number: A61H7/003 , A61H2201/105
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