发明名称 VISUAL COMMUNICATION APPARATUS
摘要 A visual communication apparatus of primarily synthetic resin material and including a plurality of pivotable mirrored surfaces operated by a single actuator to cause the mirrored surfaces to pivot from a usual misaligned position to an aligned position whereby light may be reflected. A spring biases the mirrored surfaces to the misaligned position. A light source and a sight may be included as convenient accessories.
申请公布号 US3704683(A) 申请公布日期 1972.12.05
申请号 USD3704683 申请日期 1970.09.14
申请人 E. JOHN SUMMERSBY 发明人 E. JOHN SUMMERSBY
分类号 G02B26/02;H04B10/04;(IPC1-7):G08B9/00 主分类号 G02B26/02
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