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经营范围
发明名称
Typewriter, calculating machine, and the like
摘要
申请公布号
US2199291(A)
申请公布日期
1940.04.30
申请号
US19390263989
申请日期
1939.03.24
申请人
OKOPA CARBON PAPER ELIMINATOR LIMITED
发明人
O'HALLORAN JOSEPH PATRICK;CROCKER ALAN EDWARD
分类号
B41J35/30
主分类号
B41J35/30
代理机构
代理人
主权项
地址
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