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发明名称
Drum grabs
摘要
申请公布号
US2924484(A)
申请公布日期
1960.02.09
申请号
US19550498887
申请日期
1955.04.04
申请人
TOLSMA WILLIAM A
发明人
TOLSMA WILLIAM A.
分类号
B66C1/54;B66C1/62
主分类号
B66C1/54
代理机构
代理人
主权项
地址
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