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发明名称
Cutter chain
摘要
申请公布号
US2469523(A)
申请公布日期
1949.05.10
申请号
US19440546653
申请日期
1944.07.26
申请人
JOY MANUFACTURING COMPANY
发明人
SIMMONS LEON E.
分类号
E21C35/18;E21C35/19;E21C35/193
主分类号
E21C35/18
代理机构
代理人
主权项
地址
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