James C Doran & Sons produced Variable Condensers, Copndenspr-Transformers, Wave Traps, Double Contact Sockets, RF Transformers, Variometers, Variocouplers, Bus Bar Wire, Cabinets, Knock Down Sets, Jacks, Plugs, Binding Posts. Fixed Condensors and Rheostats.

They also produced jewerly items as seen by their patents.

I believe the company produced radio parts from 1925-1926 as that was the only listings seen in the Radio Dealer Year Book 1925-1926.

Radio Dealer Year Book 1925-1926

Trademark

Doran Building