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发明名称
Leveling device
摘要
申请公布号
US1875642(A)
申请公布日期
1932.09.06
申请号
US19310515387
申请日期
1931.02.12
申请人
AMERICAN SEATING COMPANY
发明人
MORGAN ERVING B.
分类号
A47B41/02
主分类号
A47B41/02
代理机构
代理人
主权项
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