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Andrew J. Duffy

UL Ultramet: 1 patents #9 of 23Top 40%
📍 La Cañada Flintridge, CA: #268 of 465 inventorsTop 60%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #3,813,150 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5372380 Filter and method of forming Richard B. Kaplan, Stanley A. Racik, Edwin P. Stankiewicz, Robert H. Tuffias, Brian E. Williams 1994-12-13