AH

Andy D. Helfrich

TO Tellabs Operations: 2 patents #95 of 307Top 35%
📍 Bolingbrook, IL: #216 of 491 inventorsTop 45%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,201,431 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6553034 Virtual path ring protection method and apparatus Eric Chan, Leland M. Kornhaus 2003-04-22
6301254 Virtual path ring protection method and apparatus Eric Chan, Leland M. Kornhaus 2001-10-09