STERLING TELEPHONE AND ELECTRIC Co. Ltd
"ANTI INDUCTION" DOUBLE LINE
Enabling any number of separate conversations to be carried on simultaneously, free from cross talk due to induction.
No. U 445
Patent "Anti Induction" Double Line Automatic Interphone. Wall Pattern, Comprising:
Metal Parts are Nickel Plated and Woodwork Solid Walnut.
No. U 447
Table Telephone, comprising:
Available in 10, 16, 20 or 30 lines.
Taken from the Sterling Catalogue No. 11 & 12
Last revised: April 28, 2021