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公开(公告)号:US2671154A
公开(公告)日:1954-03-02
申请号:US28015452
申请日:1952-04-02
Applicant: ELIAS BURSTEIN
Inventor: ELIAS BURSTEIN
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公开(公告)号:US2816232A
公开(公告)日:1957-12-10
申请号:US36712253
申请日:1953-07-09
Applicant: ELIAS BURSTEIN
Inventor: ELIAS BURSTEIN
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