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经营范围
发明名称
Broken flange and flat wheel detector
摘要
申请公布号
US2831965(A)
申请公布日期
1958.04.22
申请号
US19560612736
申请日期
1956.09.28
申请人
WALKER SR EARL
发明人
SR. EARL WALKER,
分类号
B61L1/20
主分类号
B61L1/20
代理机构
代理人
主权项
地址
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