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发明名称
Flagstaff
摘要
申请公布号
US1855824(A)
申请公布日期
1932.04.26
申请号
US19310547741
申请日期
1931.06.29
申请人
CRICHTON FRANCIS D
发明人
CRICHTON FRANCIS D.
分类号
E04H12/32
主分类号
E04H12/32
代理机构
代理人
主权项
地址
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