. San Francisco and Bay counties telephone directory . an out- Connects the tele- Operates buzzers tomaking phone with inside line signal other stationscall on to make or receive an on the premises. intercommunicating call. 3-KeY boxes to increase THEUSEFULNESS OF YOURTELEPHONE With this little boxyou can make onetelephone do thework of rwo or is one of sev-eral devices that haveintercommunicat-ing,holding, pick-upand pri\acy for homes oroffices having two ormore telephones. Ideal for guest rooms, club rooms, dens, sunrooms and other occasionally used places. Manymoder
. San Francisco and Bay counties telephone directory . an out- Connects the tele- Operates buzzers tomaking phone with inside line signal other stationscall on to make or receive an on the premises. intercommunicating call. 3-KeY boxes to increase THEUSEFULNESS OF YOURTELEPHONE With this little boxyou can make onetelephone do thework of rwo or is one of sev-eral devices that haveintercommunicat-ing,holding, pick-upand pri\acy for homes oroffices having two ormore telephones. Ideal for guest rooms, club rooms, dens, sunrooms and other occasionally used places. Manymodern hospitals, restaurants, beauty parlors andbarber shops have portable telephones for theconvenience of their patrons. 5-AmPLIFIERTO IMPROVE HEARING An amplifier can be attached to your has several stages of amplification and enablesmost persons with impaired hearing to enjoy theuse of a telephone. Special bell or light signalsalso are
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