However in 2006 , a group of professional institutional investors assumed ownership of RESON by buying the three brothers out .
In the 1980s , RESON produced the first transducers and hydrophones , and meanwhile the company opened its first subsidiary , RESON Inc. , in California .
In 2006 , a group of professional institutional investors assumed ownership of RESON by buying the three brothers out .
In the 1980s , RESON produced the first transducers and hydrophones , and meanwhile the company opened its first subsidiary , RESON Inc. , in California .