John M. Hughes

📍 Calgary, CA: #11 of 57 inventorsTop 20%

Overall (1982): #52,740 of 81,411Top 65%

Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4326409	Situ bore hole test probe	—	1982-04-27