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经营范围
发明名称
Recording apparatus
摘要
申请公布号
US2219458(A)
申请公布日期
1940.10.29
申请号
US19370143932
申请日期
1937.05.21
申请人
SOHNS JOHN W
发明人
SOHNS JOHN W.
分类号
G03B27/46
主分类号
G03B27/46
代理机构
代理人
主权项
地址
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