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发明名称
Method of fabricating hemispherical multi-layer heads
摘要
申请公布号
US3046647(A)
申请公布日期
1962.07.31
申请号
US19590796964
申请日期
1959.03.03
申请人
A. O. SMITH CORPORATION
发明人
CARSTENS FRED A.
分类号
B21D51/24;F16L41/08
主分类号
B21D51/24
代理机构
代理人
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