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发明名称
Safety mechanism for preboarding machines
摘要
申请公布号
US2484668(A)
申请公布日期
1949.10.11
申请号
US19470770364
申请日期
1947.08.25
申请人
PROCTOR & SCHWARTZ, INC.
发明人
BACKHUS FRED
分类号
D06C5/00
主分类号
D06C5/00
代理机构
代理人
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