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公开(公告)号：US2011620A
公开(公告)日：1935-08-20
申请号：US57378731
申请日：1931-11-09
Applicant: ERB CLARCNCE F
Inventor： ERB CLARCNCE F
IPC: F24H9/18
CPC classification number: F24H9/1845
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