CY

Chih-Hao Yiu

Overall (2002): #10,154 of 266,432Top 4%
5
Patents 2002

Issued Patents 2002

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6499740 Score ring structure for dart boards — 2002-12-31
6481412 Target block structure of electronic dartboard — 2002-11-19
6450501 Dartboard — 2002-09-17
6375193 Dartboard — 2002-04-23
6371486 Hinge means for a dart board assembly — 2002-04-16