TH

Tatsuo Hara

SE Seiko Epson: 4 patents #63 of 763Top 9%
Overall (2002): #11,840 of 266,432Top 5%
4
Patents 2002

Issued Patents 2002

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6439762 Mainspring device and a winding protection structure Yoshihiko MOMOSE 2002-08-27
6422739 Mainspring device, timepiece, and method of controlling the mainspring device and the timepiece Yoshihiko MOMOSE 2002-07-23
6367966 Timepiece 2002-04-09
6339306 Control device for stepper motor, control method for the same, and timing device 2002-01-15