DJ

Donald R. Johannsen

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Dearborn Heights, MI: #62 of 429 inventorsTop 15%
🗺 Michigan: #15,670 of 86,293 inventorsTop 20%
Overall (All Time): #893,441 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
D319374 Pumpkin scoop 1991-08-27
D298060 Pumpkin light 1988-10-11
D287815 Knife blade sharpener or the like 1987-01-20
4538382 Apparatus for sharpening a knife blade or the like 1985-09-03
D268639 Pumpkin carving knife 1983-04-19
4299044 Telescopic sight mount for firearms 1981-11-10