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发明名称
Piston seal
摘要
申请公布号
US2640745(A)
申请公布日期
1953.06.02
申请号
US19500178125
申请日期
1950.08.07
申请人
NORTH AMERICAN AVIATION, INC.
发明人
WAIT LOUIS S.
分类号
F16J1/02
主分类号
F16J1/02
代理机构
代理人
主权项
地址
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