Robert A. Drake

📍 Grants Pass, OR: #1 of 13 inventorsTop 8%

🗺 Oregon: #1,023 of 4,319 inventorsTop 25%

Overall (2017): #112,116 of 506,227Top 25%

Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
9732739	Concrete pumping system having safety recirculation and method features	—	2017-08-15
D788883	Pressure relief valve for use with concrete pumping system	—	2017-06-06