PK

Patricia T. Karczewski

AS American Standard: 2 patents #187 of 558Top 35%
WB Westinghouse Air Brake: 1 patents #129 of 220Top 60%
📍 Squirrel Hill, PA: #2 of 3 inventorsTop 70%
🗺 Pennsylvania: #23,606 of 74,527 inventorsTop 35%
Overall (All Time): #1,643,538 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5630354 Extended life brake cylinder holder James C. Hoffner, Julie A. Krawczyk 1997-05-20
D319423 Locomotive brake console George B. Neilson 1991-08-27
D319039 Locomotive brake console George B. Neilson 1991-08-13