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公开(公告)号：US3551076A
公开(公告)日：1970-12-29
申请号：US3551076D
申请日：1968-03-22
Applicant: INTERPACE CORP
Inventor： WILSON LAWRENCE F
IPC: F04B43/067 , F04B43/08 , F04B43/107 , F04B9/10
CPC classification number: F04B43/067 , F04B43/08 , F04B43/107
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