CK

Calvin S. Krupa

📍 Greenfield, MN: #1 of 2 inventorsTop 50%
🗺 Minnesota: #587 of 4,549 inventorsTop 15%
Overall (2002): #71,477 of 266,432Top 30%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6478181 Shrinkable tray with attachable lids Robert Knoss, Richard T. Steichen 2002-11-12
6450341 Shipping and baking package for food items Patrick Boedigheimer 2002-09-17