Standard Radio Corporation, Ltd., 3622 Kamitsuruma, Sagamihara-Shi, Tokyo, Japan;
formerly: Nippon Kogata Musen Lab. Tokyo.
"Micronic Ruby"

Info Jean Claude Pigeon: (SR) Standard Radio Co., Ltd, Tokyo in 1955. From about 1960: Standard Radio Corporation: No. 11, 1-Chome, Ebisu-Minami, Shibuya-Ku Tokyo. About 1964 Standard opened a subsidiary as «Waltham Standard, Dublin (Irland)». Standard Radio Corp. later has been bought by Marantz. There are other Standard Radio companies in the world which have nothing to do with this Standard Radio Company from Japan. In France, "Waltham Standard Supertone - 3 avenue de l'Opéra Paris" was the distributor in 1960.

The Standard Radio Corporation was established in Setagaya, Tokyo, Japan in 1953 when they began manufacturing portable tube radios. In 1957 they manufactured their first transistor radio, the ultra rare SR-F31. In 1959 a new factory was built in Sagamihara, Kanagawa, Japan and this became the company's headquarters. Some papers from around 1962 (SR-H25) show the address "No. 11, 1-Chome Ebisu-Minami Shibuya-Ku, Tokyo. In 1965 Standard released the first of its very successful line of Micronic Ruby miniature radios. In March of 1975, Standard Radio Corporation changed its name to Marantz Japan, Inc.