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John Rene Spronken

📍 Calgary, CA: #23 of 156 inventorsTop 15%
Overall (1997): #125,908 of 185,788Top 70%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5590503 Non-composite panel — 1997-01-07