HH

Harry O. Hoffman

UN Unknown: 7 patents #1,646 of 83,584Top 2%
📍 Youngstown, OH: #55 of 284 inventorsTop 20%
🗺 Ohio: #18,857 of 73,341 inventorsTop 30%
Overall (All Time): #1,298,642 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5147486 Building plywood product and method 1992-09-15
5071688 Building plywood product 1991-12-10
5055317 Method for coating elongated workpieces James E. Kalbes, Mark A. Johnston 1991-10-08
4971537 Apparatus for puttying elongated plywood boards James E. Kalbes, Steve P. Zarnosky 1990-11-20