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发明名称
Screen
摘要
申请公布号
US1839610(A)
申请公布日期
1932.01.05
申请号
US19290406780
申请日期
1929.11.13
申请人
SYMONS BROS. DEVELOPMENT COMPANY
发明人
SYMONS LOREN G.
分类号
B07B1/28
主分类号
B07B1/28
代理机构
代理人
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地址
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