Matthew A. Katzer

📍 Portland, OR: #81 of 764 inventorsTop 15%

🗺 Oregon: #217 of 2,300 inventorsTop 10%

Overall (2004): #24,373 of 270,089Top 10%

Patents 2004

Issued Patents 2004

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
6827023	Model train control system	—	2004-12-07
6702235	Model train control system	—	2004-03-09
6676089	Model train control system	—	2004-01-13