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发明名称
Molded packing gland
摘要
申请公布号
US3002776(A)
申请公布日期
1961.10.03
申请号
US19570671280
申请日期
1957.07.11
申请人
TSCHAPPAT SHERIDAN P
发明人
TSCHAPPAT SHERIDAN P.
分类号
E21B33/08;F16J15/20
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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