Perry E. Massner

CS Canadian Downhole Drill Systems: 1 patents #5 of 13Top 40%

📍 Calgary, CA: #2,769 of 5,407 inventorsTop 55%

Overall (All Time): #3,588,680 of 4,157,543Top 90%

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6263986	Hydraulic drilling jar	Darren Stang	2001-07-24