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发明名称
Roller screen
摘要
申请公布号
US1752466(A)
申请公布日期
1930.04.01
申请号
US19270185437
申请日期
1927.04.21
申请人
RAY SAYLES
发明人
STEVENS WILLIAM E.;JAY CHARLES B.
分类号
E06B9/54
主分类号
E06B9/54
代理机构
代理人
主权项
地址
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