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发明名称
Toy parachute
摘要
申请公布号
US1795946(A)
申请公布日期
1931.03.10
申请号
US19280319519
申请日期
1928.11.15
申请人
JAMES O. EVANS
发明人
GRIMM EDWARD
分类号
A63H33/20
主分类号
A63H33/20
代理机构
代理人
主权项
地址
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