DH

David H. Halvorson

WE Wabtec Railway Electronics: 1 patents #1 of 2Top 50%
WB Westinghouse Air Brake: 1 patents #2 of 16Top 15%
📍 Cedar Rapids, IA: #11 of 118 inventorsTop 10%
🗺 Iowa: #88 of 1,029 inventorsTop 9%
Overall (2002): #69,216 of 266,432Top 30%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6377215 Apparatus and method for detecting railroad locomotive turns by monitoring truck orientation Joe B. Hungate 2002-04-23
6360998 Method and apparatus for controlling trains by determining a direction taken by a train through a railroad switch Joe B. Hungate, Stephen R. Montgomery 2002-03-26