John F. Campbell

GS Gsw: 1 patents #14 of 24Top 60%

NP Nmt Group Plc: 1 patents #4 of 5Top 80%

📍 Guelph, CA: #116 of 736 inventorsTop 20%

Overall (All Time): #1,041,269 of 4,157,543Top 30%

Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
6524278	Needle sheath	John Targell	2003-02-25
5503389	Training device	—	1996-04-02
4721156	Well clean out apparatus	—	1988-01-26
4621811	Basketball training device	—	1986-11-11
D260280	Check valve casing	—	1981-08-18