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经营范围
发明名称
Adjustable audience seat
摘要
申请公布号
US1881983(A)
申请公布日期
1932.10.11
申请号
US19310561195
申请日期
1931.09.04
申请人
URLING WALTER C
发明人
URLING WALTER C.
分类号
E04H3/12
主分类号
E04H3/12
代理机构
代理人
主权项
地址
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