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发明名称
Valvular device for fluid-injecting golf ball centers
摘要
申请公布号
US2570787(A)
申请公布日期
1951.10.09
申请号
US19470747275
申请日期
1947.05.10
申请人
THE B. F. GOODRICH COMPANY
发明人
GAMMETER JOHN R.
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主分类号
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