BG

Bruce A. Grifhorst

Overall (All Time): #1,386,878 of 4,157,543Top 35%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11585097 Wheelchair ramp system using structrually insulated panel (SIPs) Eric Smith 2023-02-21
10801211 Heated wheelchair ramp system Eric Smith 2020-10-13
10588813 Assist apparatus and system 2020-03-17