Koss Corp. was notified of the passing of Martin Lange Jr., who had partnered with John C. Koss to develop the first Koss SP/3 Stereophone in 1958.
"Marty Lange was instrumental in the development of the first SP/3 Stereophone," said John C. Koss, chairman and founder of Glendale-based Koss Corp. "His creativity and dedication were critical to the business we built together."
In 1957, Lange joined John Koss and Jerome Kadrich to form the American Development Corp. The three men manufactured a television tube checking device that Lange had designed for use in drugstores. In 1958, Koss and Lange developed a portable stereo phonograph player and Koss hit upon the idea of selling a stereo headphone with it for private listening.
Lange produced a prototype from a collection of spare repair parts from television sets in a garage the two men used as an office. The result was the first Koss Stereophone.
In 1973, Lange purchased the Acoustech Company from Koss. Lange stayed actively involved in many aspects of the Koss business for more than 50 years.
"Marty Lange was larger than life," John C. Koss said. "His spirit was impervious to challenge and his thirst for knowledge was relentless. He was the perfect partner."
Lange was preceded in death by his wife, Janet. A long standing resident of River Hills and Glendale, Lange was the father of 10 children and grandfather to 14.
The board of directors of The Manitowoc Company Inc. has elected Glen Tellock as chairman.
Tellock will continue to serve as president and chief executive officer of the company He succeeds Terry Growcock, who retired as Manitowoc’s chairman on Dec. 31.
Tellock, 47, joined the company in 1991 as director of accounting. After serving as corporate controller and then as vice president of finance and treasurer, he was named senior vice president and chief financial officer in 1999.
