FH

Frank F. Helton

📍 Chesterfield, MO: #3,708 of 6,461 inventorsTop 60%
🗺 Missouri: #13,067 of 23,789 inventorsTop 55%
Overall (All Time): #3,920,894 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4804899 Antenna rotator controllers and conversion systems therefor Gerard A. Wurdack 1989-02-14