WH

Walter J. Helms

FS Federal Signal: 1 patents #293 of 717Top 45%
📍 Cincinnati, OH: #4,941 of 8,043 inventorsTop 65%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #4,036,158 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4454601 Method and apparatus for communication of information and error checking James Geisler 1984-06-12