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发明名称
Rotary valve for internal-combustion engines
摘要
申请公布号
US1787457(A)
申请公布日期
1931.01.06
申请号
US19230630073
申请日期
1923.04.05
申请人
SMITH CLAUDE M
发明人
SMITH CLAUDE M.
分类号
F01L7/02
主分类号
F01L7/02
代理机构
代理人
主权项
地址
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