Koichi Tagawa

Shift control device for bicycle

Koichi Tagawa, 田川 幸一, 1992 .

Speed shift operation device for bicycle

Koichi Tagawa, 田川 幸一, 1992 .

Systems and methods of conducting surveys in passenger vehicles.

Atsushi Matsuzaki, Koichi Tagawa, Masami C O Patent Di Yamashita, 1988 .

Auditory agnosia restricted to environmental sounds following cortical deafness and generalized auditory agnosia

Takayuki Taniwaki, Koichi Tagawa, K. Tagawa, 2000, Clinical Neurology and Neurosurgery.