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公开(公告)号：US3167084A
公开(公告)日：1965-01-26
申请号：US8077261
申请日：1961-01-05
Applicant: INT BASIC ECONOMY CORP
Inventor： DI TIRRO DOMENIC A , PAUL CARR
IPC: F15B21/02
CPC classification number: F15B21/02 , Y10T137/5153
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