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发明名称
Butter knife
摘要
申请公布号
US2251844(A)
申请公布日期
1941.08.05
申请号
US19400327723
申请日期
1940.04.03
申请人
E. C. AXELROD
发明人
KEEFER HARRY PRESTON
分类号
A01J23/00;B26B3/00;B26D1/08
主分类号
A01J23/00
代理机构
代理人
主权项
地址
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