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发明名称
SPARK EROSION
摘要
申请公布号
ZA7506514(B)
申请公布日期
1977.05.25
申请号
ZA19750006514
申请日期
1975.10.15
申请人
DE BEERS IND DIAMOND DIVISION LTD
发明人
LEVITT C;CHATTERLEY S
分类号
H01B
主分类号
H01B
代理机构
代理人
主权项
地址
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