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经营范围
发明名称
Piston
摘要
申请公布号
US2406258(A)
申请公布日期
1946.08.20
申请号
US19440557813
申请日期
1944.10.09
申请人
ROTH WILLIAM A
发明人
ROTH WILLIAM A.
分类号
F02B75/04
主分类号
F02B75/04
代理机构
代理人
主权项
地址
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