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经营范围
发明名称
Duplex steam motor
摘要
申请公布号
US2216639(A)
申请公布日期
1940.10.01
申请号
US19360095291
申请日期
1936.08.10
申请人
THE WHELAND COMPANY
发明人
CAMPBELL GEORGE E.
分类号
F04B9/12
主分类号
F04B9/12
代理机构
代理人
主权项
地址
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