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公开(公告)号:US2728176A
公开(公告)日:1955-12-27
申请号:US29184452
申请日:1952-06-05
Applicant: DAYTON RUBBER COMPANY
Inventor: RITZERT NORMAN J
公开(公告)号:US2728176A
公开(公告)日:1955-12-27
申请号:US29184452
申请日:1952-06-05
Applicant: DAYTON RUBBER COMPANY
Inventor: RITZERT NORMAN J