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发明名称
Controlling device for window shade rollers
摘要
申请公布号
US1855233(A)
申请公布日期
1932.04.26
申请号
US19310533935
申请日期
1931.04.30
申请人
HANSON ANDREW C
发明人
HANSON ANDREW C.
分类号
E06B9/50
主分类号
E06B9/50
代理机构
代理人
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地址
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