DC

Donald L. Crothers

ES Energy Absorption Systems: 2 patents #22 of 45Top 50%
📍 Rocklin, CA: #118 of 293 inventorsTop 45%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,064,080 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8348546 Method for transferring a barrier James B. Welch, Douglas E. Wilkinson, Patrick A. Leonhardt, Michael H. Oberth, Barry D. Stephens +1 more 2013-01-08
8109692 Barrier transfer device, system and method for the use thereof James B. Welch, Douglas E. Wilkinson, Patrick A. Leonhardt, Michael H. Oberth, Barry D. Stephens +1 more 2012-02-07