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公开(公告)号：US1665654A
公开(公告)日：1928-04-10
申请号：US73031124
申请日：1924-08-05
Applicant: PROSPERITY CO INC
Inventor： BRAUN PHILIP N , HART SIMEON T
IPC: D06F71/36
CPC classification number: D06F71/36
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