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发明名称
ELEKTROGERAET FUER DIE SCHNELLAUSHAERTUNG VON SPEZIALKLEBEMITTELN UND DIE ECHTHEITSPRUEFUNG VON EDEL- UND HALBEDELSTEINEN.
摘要
申请公布号
DE1879488(U)
申请公布日期
1963.09.19
申请号
DE196300G8269U
申请日期
1963.07.11
申请人
ERHARD GROS
发明人
ERHARD GROS
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主分类号
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