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发明名称
An improved valve for use in pneumatic playing balls and means for securing said valve in the ball
摘要
申请公布号
GB477469(A)
申请公布日期
1937.12.31
申请号
GB19360021903
申请日期
1936.08.08
申请人
HUGO GOLDSMITH
发明人
分类号
F16K15/20
主分类号
F16K15/20
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代理人
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