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David C Koelling

DIDigideal: 2 patents #8 of 13Top 65%

Spokane, WA: #391 of 1,134 inventorsTop 35%

Washington: #35,300 of 76,902 inventorsTop 50%

Overall (All Time): #2,220,077 of 4,157,543Top 55%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6481718	Method of playing blackjack with a side wager	—	2002-11-19
6158741	Method of playing blackjack with a side wager	—	2000-12-12