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Arthur G. Duppstadt

📍 Leechburg, PA: #10 of 55 inventorsTop 20%
🗺 Pennsylvania: #19,182 of 74,527 inventorsTop 30%
Overall (All Time): #1,264,913 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6764180 Multifocal contact lens and method of making the same 2004-07-20
6709102 Multifocal contact lens and method of making the same 2004-03-23
6659606 Alignment apparatus for an eyeglass hinge assembly and method employing same 2003-12-09
4979337 Polishing tool for contact lenses and associated method 1990-12-25