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公开(公告)号：CA339111A
公开(公告)日：1934-01-30
申请号：CA339111D
Applicant: KANNEL REVOLVING DOOR COMPANY
Inventor： SIMPSON ARTHUR MOULTON
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公开(公告)号：CA334393A
公开(公告)日：1933-07-25
申请号：CA334393D
Applicant: KANNEL REVOLVING DOOR COMPANY
Inventor： SIMPSON ARTHUR MOULTON
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