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经营范围
发明名称
Piston, packing, and the like
摘要
申请公布号
US1920470(A)
申请公布日期
1933.08.01
申请号
US19310549358
申请日期
1931.07.08
申请人
KURTH MATTHEW G
发明人
KURTH MATTHEW G.
分类号
F16J9/04
主分类号
F16J9/04
代理机构
代理人
主权项
地址
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