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公开(公告)号：US1912314A
公开(公告)日：1933-05-30
申请号：US57516531
申请日：1931-11-14
Applicant: KANNEL REVOLVING DOOR COMPANY
Inventor： SIMPSON ARTHUR M
IPC: C10M111/02
CPC classification number: C10M111/02 , C10M101/02 , C10M103/04 , C10M2201/05 , C10M2201/053 , C10M2203/1006 , C10M2203/1025 , C10M2203/1045 , C10M2203/1065 , C10M2203/1085
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