William F. Helwig, Jr.

AI Avtec Industries: 2 patents #1 of 1Top 100%

📍 Downers Grove, IL: #3 of 44 inventorsTop 7%

🗺 Illinois: #80 of 2,749 inventorsTop 3%

Overall (1982): #2,756 of 81,411Top 4%

Patents 1982

Issued Patents 1982

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
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