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公开(公告)号：US1699992A
公开(公告)日：1929-01-22
申请号：US18062627
申请日：1927-04-02
Applicant: ROTHSTEIN SARAH D
Inventor： ROTHSTEIN SARAH D
IPC: A61H7/00
CPC classification number: A61H7/00 , A61H7/002 , A61H2201/1692
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