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发明名称
Optical instrument
摘要
申请公布号
US1769295(A)
申请公布日期
1930.07.01
申请号
US19270172463
申请日期
1927.03.03
申请人
KENNEBECK JOSEPH J
发明人
KENNEBECK JOSEPH J.
分类号
A61H5/00
主分类号
A61H5/00
代理机构
代理人
主权项
地址
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PROFILE
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