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发明名称
Hand operated keypunch
摘要
申请公布号
US2726720(A)
申请公布日期
1955.12.13
申请号
US19520297417
申请日期
1952.07.07
申请人
ROYAL MCBEE CORPORATION
发明人
MARTIN CLARENCE W.
分类号
G06K21/06
主分类号
G06K21/06
代理机构
代理人
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地址
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