Background
Tsunejiro Sugawara was born in Hyogo Prefecture in 1908.
常次郎 菅原
Tsunejiro Sugawara was born in Hyogo Prefecture in 1908.
He graduated from Commercial Science Department of Tokyo University (1932).
He served with Teikoku Marine Transportation Company, founded and became president of Mamiya Optical Industry Company (1939) which later was reorganized into a joint-stock corporation (1950).