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发明名称
Lubricant
摘要
申请公布号
US2257328(A)
申请公布日期
1941.09.30
申请号
US19370178557
申请日期
1937.12.07
申请人
UNION OIL COMPANY OF CALIFORNIA
发明人
BRAY ULRIC B.
分类号
主分类号
代理机构
代理人
主权项
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