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经营范围
发明名称
WERKWIJZE VOOR HET BEREIDEN VAN ZWAVELZUUR.
摘要
申请公布号
NL165996(B)
申请公布日期
1981.01.15
申请号
NL19690004401
申请日期
1969.03.21
申请人
THE RALPH M. PARSONS COMPANY, LOS ANGELES, CALIFORNIE, VER. ST. V. AM.
发明人
分类号
C01B17/765;(IPC1-7):C01B17/76
主分类号
C01B17/765
代理机构
代理人
主权项
地址
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