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发明名称
Counting system including step-by-step devices providing predetermined operation
摘要
申请公布号
US2803407(A)
申请公布日期
1957.08.20
申请号
US19520301728
申请日期
1952.07.30
申请人
WELDING RESEARCH, INC.
发明人
BERGER JACQUES
分类号
H03K23/74
主分类号
H03K23/74
代理机构
代理人
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地址
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