DC

David J Chrien

📍 Shaker Heights, OH: #89 of 490 inventorsTop 20%
🗺 Ohio: #11,686 of 73,341 inventorsTop 20%
Overall (All Time): #738,785 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
9068341 Utility trench system components 2015-06-30
8826613 Utility trench system components 2014-09-09
D710032 Pipe trench side panel elbow 2014-07-29
D709627 Pipe trench side panel 2014-07-22
D705447 Pipe trench side panel elbow 2014-05-20
D705446 Pipe trench side panel 2014-05-20
D686751 Utility trench side panel portion 2013-07-23