WJ

William F. Helwig, Jr.

AI Avtec Industries: 4 patents #1 of 12Top 9%
📍 Downers Grove, IL: #165 of 824 inventorsTop 25%
🗺 Illinois: #17,877 of 84,256 inventorsTop 25%
Overall (All Time): #1,066,387 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
RE31147 Ground fault and fire detector system Henry D. Jeffries, Jr. 1983-02-08
4331484 Energy saving dishwashing method with heater control 1982-05-25
4316229 Electric current detector circuit 1982-02-16
4315140 Energy saving dishwasher 1982-02-09
4254788 Energy saving dishwasher 1981-03-10