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发明名称
Recording instrument
摘要
申请公布号
US2257233(A)
申请公布日期
1941.09.30
申请号
US19390303951
申请日期
1939.11.13
申请人
BAUSCH & LOMB OPTICAL COMPANY
发明人
GALLASCH GEORGE B.
分类号
G01C1/08
主分类号
G01C1/08
代理机构
代理人
主权项
地址
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