Electro Importing Company.; "E.I.Co." Park Place 32, New York (~1904); Selling radio components and electrical supplies by mail-order. 1905 marketing the "Telimco Wireless Telegraph", a simple and cheap receiver and transmitter set.

Also 233 Fulton, New York, NY (1914), and "The Electro Importing Co." 231A Fulton Sreet, New York with two retail stores (known as "the E.I. Company").
Founder was Hugo Gernsback, who also wrote his own catalogues like: "Modern Electrics", publishedtechnical articles as well as books, and edited magazines especially with Science Fiction based stories.