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发明名称
Thermal operator
摘要
申请公布号
US2271307(A)
申请公布日期
1942.01.27
申请号
US19380236259
申请日期
1938.10.21
申请人
RAY WILLIAM A
发明人
RAY WILLIAM A.
分类号
F16K31/02;G05D23/19
主分类号
F16K31/02
代理机构
代理人
主权项
地址
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