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发明名称
Copying, tracing, and reproducing apparatus
摘要
申请公布号
US2186330(A)
申请公布日期
1940.01.09
申请号
US19370178551
申请日期
1937.12.07
申请人
FITZGERALD JOHN R
发明人
FITZGERALD JOHN R.
分类号
G03B21/06
主分类号
G03B21/06
代理机构
代理人
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地址
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