International Crystal Manufacturing (I.C.M.)
Royden R. Freeland founded International Crystal Manufacturing Company in 1950 operating in his garage. He soon moved the company to a building in downtown Oklahoma City. ICM produced crystals for Collins Radio and other radio companies. ICM also made oscillators and converters for Ham and experimenter use. The product line grew and, by the late 1950′s, included cable TV equipment, frequency meters, CB radios, Ham Radio kits, as well as quartz crystals.
ICM is still in business manufacturing crystal products. The URL to the ICM website is http://www.icmfg.com.
International Manufacturing Co., Inc. (1963)
18 North Lee
Oklahoma City Oklahoma