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经营范围
发明名称
Piston expander
摘要
申请公布号
US1988707(A)
申请公布日期
1935.01.22
申请号
US19330662240
申请日期
1933.03.23
申请人
ULVANG OSCAR L
发明人
ULVANG OSCAR L.
分类号
F16J1/06
主分类号
F16J1/06
代理机构
代理人
主权项
地址
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