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发明名称
Manufacture of artificial materials
摘要
申请公布号
US1991810(A)
申请公布日期
1935.02.19
申请号
US19310560657
申请日期
1931.09.01
申请人
LEON LILIENFELD
发明人
LILIENFELD LEON
分类号
C08G12/40
主分类号
C08G12/40
代理机构
代理人
主权项
地址
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