DH

Donald P. Hoover

SA Selas Corporation Of America: 1 patents #14 of 30Top 50%
📍 Lansdale, PA: #405 of 839 inventorsTop 50%
🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%
Overall (All Time): #2,282,301 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5567380 Rotary retort heat treating furnace seals — 1996-10-22
4430057 Calciner screw construction Michael A. Csapo, Ernst A. Siemssen 1984-02-07