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发明名称
Writing shelf
摘要
申请公布号
US1963721(A)
申请公布日期
1934.06.19
申请号
US19300456992
申请日期
1930.05.29
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
SMITH EDWARD M.
分类号
A47B5/04
主分类号
A47B5/04
代理机构
代理人
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地址
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