FC

Frank Chvojcsek

SL Stenograph, L.L.C.: 1 patents #1 of 2Top 50%
📍 Chicago, IL: #175 of 655 inventorsTop 30%
🗺 Illinois: #1,486 of 5,836 inventorsTop 30%
Overall (2002): #220,683 of 266,432Top 85%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6422771 Disposable ribbon cartridge for shorthand machine Van E. Sun 2002-07-23