Amperite Co., 567 52nd Street, PO Box 329, West New York, NJ 07093
Amperite Co.: Manufactures time delay relays, flashers and controlling devices. New products include general purpose, pcb, automotive and signal relays. Focus markets are electronic distribution and original equipment manufacturers.
Amperite Co. is a business unit of Olympic Controls Corp./Amperite Co.

Most probably in conjunction with "Amperite, Radiall Company, 50 Franklin Street, New York (1927).

1922: Business Incorporated in New York City, NY by Samuel Ruttenberg, produced cartridge-type Automatic Adjusting Resistors (ballast current-regulators) for tube-operated AC/DC radio sets.
1930 (circa): Began making hermetically-sealed ballast regulators in vacuum tube form with helium and hydrogen gas.
1940 (circa): Manufactured hermetically sealed time delay relays in a vacuum tube form with different gases and also developed several series of microphones. An original box for the Delay Relay tube type 6C2 shows address: Amperite Co., Inc.; Union City, N.J.
2002: Amperite Ownership was transferred to Olympic Controls Corp.
2003: Company relocated to West New York, NJ and introduced 20 new series of Relays, Auto, PCB, General Purpose, Power and Signal Relays to complete the line.