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公开(公告)号：US2514791A
公开(公告)日：1950-07-11
申请号：US72882847
申请日：1947-02-15
Applicant: PHILIPS LAB INC
Inventor： WILLIAM PARRISH , CISNEY EVELYN A
IPC: G21K1/02
CPC classification number: G21K1/02
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