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公开(公告)号:US2885788A
公开(公告)日:1959-05-12
申请号:US73798458
申请日:1958-05-26
Applicant: ABRAHAM LEVITON
Inventor: ABRAHAM LEVITON
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公开(公告)号:US2885788A
公开(公告)日:1959-05-12
申请号:US73798458
申请日:1958-05-26
Applicant: ABRAHAM LEVITON
Inventor: ABRAHAM LEVITON