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发明名称
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摘要
申请公布号
US3363851(A)
申请公布日期
1968.01.16
申请号
US19650489657
申请日期
1965.09.23
申请人
EUGEN BAUER, G.M.B.H.
发明人
RUBE HELMUT
分类号
G03B1/42;G03B1/56;G03B21/32
主分类号
G03B1/42
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