CK

Calvin S. Krupa

UP Ultra Pac: 37 patents #1 of 9Top 15%
📍 Greenfield, MN: #2 of 27 inventorsTop 8%
🗺 Minnesota: #692 of 52,454 inventorsTop 2%
Overall (All Time): #43,284 of 4,157,543Top 2%
57
Patents All Time

Issued Patents All Time

Showing 51–57 of 57 patents

Patent #TitleCo-InventorsDate
D346554 Storage and display container for food 1994-05-03
D346552 Fruit clamshell container 1994-05-03
D345912 Container for baked food products 1994-04-12
D345894 Tray for baked goods 1994-04-12
D344660 Snack food container with lid 1994-03-01
D343576 Berry box 1994-01-25
D329572 Container with cover 1992-09-22