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公开(公告)号：US1613790A
公开(公告)日：1927-01-11
申请号：US10507726
申请日：1926-04-28
Applicant: EDNA W MACLEAN
Inventor： LEWIS ENGENDAHL HENRY , MACLEAN EDNA W
IPC: A47L13/23
CPC classification number: A47L13/23
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