NATIONAL TELEPHONE COMPANY
B715

Telephones for existing Electric Bell Wires

DINING ROOM, ETC., SETS

With Ringing Keys, Buzzers, etc.

Pattern No. B715 & Pattern No. B720

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.

These sets were also in the 1903 Catalogue.
B715 was B109
B720 was B110

Last revised: November 17, 2025