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发明名称
Safety switch point bridal bar protector
摘要
申请公布号
US2222855(A)
申请公布日期
1940.11.26
申请号
US19390311181
申请日期
1939.12.27
申请人
RITCHEY ANDREW M
发明人
RITCHEY ANDREW M.
分类号
B61L5/02
主分类号
B61L5/02
代理机构
代理人
主权项
地址
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