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公开(公告)号：US2775139A
公开(公告)日：1956-12-25
申请号：US48463755
申请日：1955-01-28
Applicant: IBM
Inventor： WARD LEATHERS , MAZUR WILFRED E , WEAVER JAMES G
CPC classification number: F41A27/22 , F16H1/00 , F16H37/00 , F16H2702/00 , Y10T74/19633
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