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公开(公告)号:US2509753A
公开(公告)日:1950-05-30
申请号:US73030747
申请日:1947-02-24
Applicant: GEN ELECTRIC
Inventor: WOODSON THOMAS T
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公开(公告)号:US2509753A
公开(公告)日:1950-05-30
申请号:US73030747
申请日:1947-02-24
Applicant: GEN ELECTRIC
Inventor: WOODSON THOMAS T