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发明名称
PICTURE MAT
摘要
申请公布号
CA349540(A)
申请公布日期
1935.04.16
申请号
CAD349540
申请日期
申请人
HARVEY A. PREW
发明人
HARVEY A. PREW
分类号
主分类号
代理机构
代理人
主权项
地址
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