JL

John P. Leuenberger

KR Koh-I-Noor Rapidograph: 2 patents #10 of 38Top 30%
📍 Bethlehem, PA: #449 of 1,038 inventorsTop 45%
🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%
Overall (All Time): #2,337,459 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4753546 Pressure balanced stylographic pen Wolfgang Witz, Fortunato J. Micale 1988-06-28
D257857 Drawing pen Wolfgang Witz 1981-01-13