John K. Martin

UN Unknown: 1 patents #267 of 2,778Top 10%

📍 Calgary, CA: #38 of 242 inventorsTop 20%

Overall (2002): #186,529 of 266,432Top 75%

Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6415988	Rail track surface structure	—	2002-07-09