AH

Alvin J. Halfaker

📍 Grand Rapids, MN: #2 of 4 inventorsTop 50%
🗺 Minnesota: #2,481 of 6,792 inventorsTop 40%
Overall (2018): #494,970 of 503,207Top 100%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10149786 Noise reduction earmuffs system and method — 2018-12-11