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发明名称
Character bearing element for key chains and like devices
摘要
申请公布号
US2257304(A)
申请公布日期
1941.09.30
申请号
US19400316654
申请日期
1940.01.31
申请人
HICKOK MANUFACTURING COMPANY, INC.
发明人
MIX EDWIN S.;VAISEY HAROLD C.
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