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公开(公告)号：US2414293A
公开(公告)日：1947-01-14
申请号：US41735441
申请日：1941-10-31
Applicant: CALIFORNIA RESEARCH CORP
Inventor： FARRINGTON BRUCE B , HUMPHREYS ROBERT L , MACDONALD RONALD T
IPC: C23C22/50
CPC classification number: C23C22/50
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