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发明名称
SLIDE RULES
摘要
申请公布号
CA558442(A)
申请公布日期
1958.06.10
申请号
CAD558442
申请日期
申请人
JOHN D. BLAKELEY;SIDNEY R. POTTER
发明人
JOHN D. BLAKELEY;SIDNEY R. POTTER
分类号
主分类号
代理机构
代理人
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