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公开(公告)号：US1965481A
公开(公告)日：1934-07-03
申请号：US51999131
申请日：1931-03-04
Applicant: KANNEL REVOLVING DOOR COMPANY
Inventor： TATMAN JAMES M
IPC: E06B3/90
CPC classification number: E06B3/90 , E05Y2900/132
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