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公开(公告)号:US2617432A
公开(公告)日:1952-11-11
申请号:US26128951
申请日:1951-12-12
Applicant: HERTZBERG & SON INC H
Inventor: WILLIAM HERTZBERG
公开(公告)号:US2617432A
公开(公告)日:1952-11-11
申请号:US26128951
申请日:1951-12-12
Applicant: HERTZBERG & SON INC H
Inventor: WILLIAM HERTZBERG