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公开(公告)号：US3031393A
公开(公告)日：1962-04-24
申请号：US5604460
申请日：1960-09-14
Applicant: SAUR ALBERT J , MCCARTY JR WARREN K , JOHNSON LINWOOD E
Inventor： SAUR ALBERT J , MCCARTY JR WARREN K , JOHNSON LINWOOD E
IPC: G21C9/02
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