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HAFNIUM PYROPHOSPHATE PHOSPHORS AND METHODS OF PREPARATIO
申请公布号:
GB1491544(A)
申请号:
GB19750003944
申请日期:
1975.01.29
申请公布日期:
1977.11.09
申请人:
RCA CORP
分类号:
C01B25/42;C09K11/70;(IPC1-7):C09K11/42
主分类号:
C01B25/42
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