Gary E Keffer

📍 Chesapeake, VA: #48 of 343 inventorsTop 15%

🗺 Virginia: #9,471 of 34,511 inventorsTop 30%

Overall (All Time): #1,488,506 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
9566556	Adjustable venturi fluid mixing method	—	2017-02-14
9038590	Adjustable venturi mixing valve assembly	—	2015-05-26
8651137	Gas manifold system for steady gas supply at outlet	—	2014-02-18