JH

John A. Helmsderfer

PL Partners In Innovation Limited: 2 patents #1 of 6Top 20%
📍 East Liverpool, OH: #1 of 5 inventorsTop 20%
🗺 Ohio: #1,072 of 7,013 inventorsTop 20%
Overall (2017): #139,162 of 506,227Top 30%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9724708 Garden watering device Nathan Maggard, Andrew Ahr, Nicholas Jeffers, Yani Deros, Craig Ovans 2017-08-08
9597699 Water flow metering device Andrew Ahr 2017-03-21