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发明名称
Lens block
摘要
申请公布号
US2264392(A)
申请公布日期
1941.12.02
申请号
US19400351998
申请日期
1940.08.09
申请人
MCCLERNON FRANCIS H
发明人
MCCLERNON FRANCIS H.
分类号
B24B13/005
主分类号
B24B13/005
代理机构
代理人
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