CH

Chiman Hwang

📍 Federal Way, WA: #173 of 444 inventorsTop 40%
🗺 Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #2,313,863 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4990008 Refillable ink ribbon cartridge for use in electronic typewriter — 1991-02-05
4986678 Refillable ink ribbon cartridge for use in an electronic typewriter — 1991-01-22