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发明名称
Apparatus for notching sheet material having reversible multiple cutting edge ledger blades
摘要
申请公布号
US2964984(A)
申请公布日期
1960.12.20
申请号
US19560623483
申请日期
1956.11.20
申请人
GEORGE F. WALES
发明人
SCHOTT ARTHUR K.
分类号
B21D28/14
主分类号
B21D28/14
代理机构
代理人
主权项
地址
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