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公开(公告)号:US2674664A
公开(公告)日:1954-04-06
申请号:US15645650
申请日:1950-04-17
Applicant: CLUBB ROY E , VENNARI JOSEPH P
Inventor: CLUBB ROY E , VENNARI JOSEPH P
公开(公告)号:US2674664A
公开(公告)日:1954-04-06
申请号:US15645650
申请日:1950-04-17
Applicant: CLUBB ROY E , VENNARI JOSEPH P
Inventor: CLUBB ROY E , VENNARI JOSEPH P