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发明名称
Piston ring
摘要
申请公布号
US2234159(A)
申请公布日期
1941.03.04
申请号
US19390266251
申请日期
1939.04.06
申请人
RAMSEY ACCESSORIES MANUFACTURING CORPORATION
发明人
MARIEN CHARLES A.
分类号
F16J9/06;F16J9/20;F16J9/22
主分类号
F16J9/06
代理机构
代理人
主权项
地址
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