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发明名称
Ringless self-expanding piston
摘要
申请公布号
US2419714(A)
申请公布日期
1947.04.29
申请号
US19450578602
申请日期
1945.02.19
申请人
FLOYD RESEARCH AND DEVELOPMENT CO.
发明人
FLOYD GEORGE P.
分类号
F02F3/02;F16J1/04
主分类号
F02F3/02
代理机构
代理人
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