David C Koelling — 2 Patents at Digideal

David C Koelling has been granted 2 US patents while listed as an inventor at Digideal. The first was granted in 2000 and the most recent in November 2002. David C Koelling ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David C Koelling in Spokane, WA, US.

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

David C Koelling — 2 Patents

Issued Patents All Time

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