WS

Walter Sieckman

PE Pennsylvania Engineering: 2 patents #6 of 23Top 30%
Overall (All Time): #2,368,784 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4365992 Method of treating ferrous metal 1982-12-28
4302244 Steel conversion method Jai K. Pearce, Eberhard G. Schempp 1981-11-24