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发明名称
Expansion valve for refrigerating systems
摘要
申请公布号
US1793019(A)
申请公布日期
1931.02.17
申请号
US19280307630
申请日期
1928.09.22
申请人
IRVING L. KEITH
发明人
SAWYER ALBERT F.
分类号
F25B41/06
主分类号
F25B41/06
代理机构
代理人
主权项
地址
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