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公开(公告)号:US2751477A
公开(公告)日:1956-06-19
申请号:US29904552
申请日:1952-07-15
Applicant: PITTSBURGH PLATE GLASS CO
Inventor: VINCENT FITZGERALD JOHN
公开(公告)号:US2751477A
公开(公告)日:1956-06-19
申请号:US29904552
申请日:1952-07-15
Applicant: PITTSBURGH PLATE GLASS CO
Inventor: VINCENT FITZGERALD JOHN