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发明名称
REGISTRIERGERAET MIT VERAENDERLICHEM PAPIERVORISCHUB UND/ODER VERAENDERLICHER SCHREIBSTIFTGESCHWINDIGKEIT.
摘要
申请公布号
DE1692755(U)
申请公布日期
1955.02.10
申请号
DE195300E3773U
申请日期
1953.02.16
申请人
ELECTROACUSTIC GESELLSCHAFT M.B.H.
发明人
分类号
主分类号
代理机构
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