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发明名称
VALVE WITH DOUBLE CLOSING MEANS
摘要
申请公布号
CA609021(A)
申请公布日期
1960.11.22
申请号
CAD609021
申请日期
申请人
GUSTAV F. GERDTS
发明人
HANS-MARTIN PAPE;JOHANN SCHULZE;EMIL HILLER
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