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发明名称
Playground device
摘要
申请公布号
US3081083(A)
申请公布日期
1963.03.12
申请号
US19600064344
申请日期
1960.10.24
申请人
GREGORY JAMES W
发明人
GREGORY JAMES W.
分类号
A63G1/46
主分类号
A63G1/46
代理机构
代理人
主权项
地址
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