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Polarization and keying mechanism

Image Number 2 for United States Patent #4986769.

A first connector 1 provided with a polarizing structure 23 and keying structure 28, 29, a complementary housing 3 provided with a receiving end 25 having a slidable frame 30 for receiving the polarizing structure 23 and the keying structure 28, 29, and the frame 30 having complementary keying means aligned with the keying structure of the first connector and aligned with a single one of the multiple connector positions.

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