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发明名称
Method of making a shade screen
摘要
申请公布号
US3015156(A)
申请公布日期
1962.01.02
申请号
US19570655769
申请日期
1957.04.29
申请人
EWING DEVELOPMENT COMPANY
发明人
EWING WALKLEY B.
分类号
B21F29/02
主分类号
B21F29/02
代理机构
代理人
主权项
地址
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