WO

Wataru Ohyagi

TO Topcon: 2 patents #309 of 684Top 50%
Overall (All Time): #2,216,320 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6422700 Visual acuity chart displaying apparatus — 2002-07-23
5903335 Apparatus for displaying visual acuity chart with constant magnification — 1999-05-11