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发明名称
Photographic multimeter
摘要
申请公布号
US2892978(A)
申请公布日期
1959.06.30
申请号
US19540464916
申请日期
1954.10.26
申请人
WILLIAM PERA
发明人
PERA WILLIAM
分类号
G01J1/42;G03B43/00
主分类号
G01J1/42
代理机构
代理人
主权项
地址
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