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发明名称
Erasable graphitic writing solution
摘要
申请公布号
US2956038(A)
申请公布日期
1960.10.11
申请号
US19580779829
申请日期
1958.12.12
申请人
VENUS PEN & PENCIL CORPORATION
发明人
JUELSS DAVID;TOROK ANDREW
分类号
C09D11/16;C09D11/18
主分类号
C09D11/16
代理机构
代理人
主权项
地址
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