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发明名称
Miner's pick
摘要
申请公布号
US2095156(A)
申请公布日期
1937.10.05
申请号
US19360067946
申请日期
1936.03.09
申请人
MARTIN BRANHAM
发明人
SPARKS JAY G.
分类号
B25G3/02
主分类号
B25G3/02
代理机构
代理人
主权项
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