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公开(公告)号：US2875950A
公开(公告)日：1959-03-03
申请号：US30979652
申请日：1952-09-16
Applicant: MAST DEV COMPANY INC
Inventor： MAST GIFFORD M , GANNETT WRIGHT K , TAYLOR WESLEY A
IPC: G06M1/04
CPC classification number: G06M1/041
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