KD

Kenneth G. Duffie

📍 Bridgewater, MA: #79 of 199 inventorsTop 40%
🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%
Overall (All Time): #2,306,028 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D342535 Safety spectacles — 1993-12-21
4630321 Safety spectacles with brow protector Hans W. Sagemuehl 1986-12-23