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发明名称
Nonparallax pointer
摘要
申请公布号
US2323709(A)
申请公布日期
1943.07.06
申请号
US19420427005
申请日期
1942.01.16
申请人
ELLISON LEWIS M
发明人
ELLISON LEWIS M.
分类号
G01D13/22
主分类号
G01D13/22
代理机构
代理人
主权项
地址
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