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发明名称
RULING ENGINES
摘要
申请公布号
CA523497(A)
申请公布日期
1956.04.03
申请号
CAD523497
申请日期
申请人
NATIONAL RESEARCH DEVELOPMENT CORPORATION
发明人
ROY G. N. HALL
分类号
B23G1/04;B23G7/00;B23Q5/40;B23Q23/00;B44B3/04
主分类号
B23G1/04
代理机构
代理人
主权项
地址
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