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发明名称
Toy trackage
摘要
申请公布号
US1753147(A)
申请公布日期
1930.04.01
申请号
US19260136359
申请日期
1926.09.18
申请人
GESSFORD HANDY LEVIN
发明人
HANDY LEVIN GESSFORD
分类号
A63H19/30
主分类号
A63H19/30
代理机构
代理人
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