Robert F. Dray

📍 Dallas, TX: #66 of 498 inventorsTop 15%

🗺 Texas: #1,045 of 8,590 inventorsTop 15%

Overall (2002): #44,621 of 266,432Top 20%

Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6464488	Sliding ring non-return valve	—	2002-10-15
6413076	Shut-off nozzle	—	2002-07-02