Electronic switching matrix control - has additional diodes providing extra switching nodes within conventional matrix
NL9000277A
Moulded plastic telephone handset - has snap in retaining arrangement for transducer mounting
NL9000278A
Hinged coupler for a hook arm of a telephone.
NL9000279A
Flexible printed circuit board - has rigid substrate produced by series of partial transverse saw cuts
NL8901896A
Wall telephone.
NL8901897A
Coupling system for coupling two parts of a housing.
NL8800396A
Telephone subscriber pair monitoring circuit - is mounted in subscriber's junction box and disconnects subscribers' appts. from protection against high voltage or current
