RG

Robert L. Grinstead

📍 Chisago City, MN: #3 of 13 inventorsTop 25%
🗺 Minnesota: #807 of 5,562 inventorsTop 15%
Overall (2025): #91,711 of 469,880Top 20%
2
Patents 2025

Issued Patents 2025

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12351014 Optimized AC powered auxiliary units for medium/heavy duty configurable electric trucks William Brandt 2025-07-08
12233818 Stair system for vehicle Deepak Kapur, David Bruford, Aleyna Kapur, Roman Kapur, Ashlon Lionel Frank +5 more 2025-02-25