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发明名称
Opaque paper
摘要
申请公布号
US1988179(A)
申请公布日期
1935.01.15
申请号
US19330681528
申请日期
1933.07.21
申请人
CROWN WILLAMETTE PAPER COMPANY
发明人
NATWICK ALBERT G.;OSTENSON HENRY E.;BARBER WILLIAM R.
分类号
D21H23/28
主分类号
D21H23/28
代理机构
代理人
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地址
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