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发明名称
Toy railway switch-throwing mechanism
摘要
申请公布号
US2079251(A)
申请公布日期
1937.05.04
申请号
US19280298265
申请日期
1928.08.08
申请人
HERBERT C. GRAY
发明人
HAUPT WILLIAM E.
分类号
A63H19/32
主分类号
A63H19/32
代理机构
代理人
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