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发明名称
Photometer
摘要
申请公布号
US1816047(A)
申请公布日期
1931.07.28
申请号
US19270199162
申请日期
1927.06.16
申请人
KEUFFEL & ESSER COMPANY
发明人
KEUFFEL CARL W.
分类号
G01J1/36
主分类号
G01J1/36
代理机构
代理人
主权项
地址
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