JM

John K. Martin

📍 Calgary, CA: #3 of 156 inventorsTop 2%
Overall (1997): #35,248 of 185,788Top 20%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5651666 Deep-well fluid-extraction pump 1997-07-29
5622312 Rail track surface structure 1997-04-22