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经营范围
发明名称
Grooving machine
摘要
申请公布号
US2299198(A)
申请公布日期
1942.10.20
申请号
US19400351741
申请日期
1940.08.07
申请人
RICHARD T. AVARD
发明人
WILLIAMS LOUIS R.
分类号
B24B19/02;B28D1/04
主分类号
B24B19/02
代理机构
代理人
主权项
地址
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