Telephones for existing Electric Bell Wires
DINING ROOM, ETC., SETS
Pattern No. B715 & Pattern No. B720
With Ringing Keys, Buzzers, etc.
With these Sets ringing can take place both ways and they are suitable for use with Patterns Nos. B685, B690, and B705, for distances up to 200 yards.
Pattern No. B715 in appearance is very similar to Pattern No. B330.
Pattern No. B720 is shown to the right.