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Otto R. Kafer

HF H.B. Fuller: 2 patents #50 of 230Top 25%
📍 Saint Paul, MN: #330 of 620 inventorsTop 55%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,373,205 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4210978 Automatic carpet cleaning machine Richard C. Johnson, Mike J. Todd 1980-07-08
4196492 Automatic carpet cleaning machine Richard C. Johnson, Mike J. Todd 1980-04-08