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发明名称
Protector for beer can openers
摘要
申请公布号
US2280336(A)
申请公布日期
1942.04.21
申请号
US19390279554
申请日期
1939.06.16
申请人
GEORGE H. HUTAFF, JR.
发明人
MAIHACK HERMAN J.
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主分类号
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