DS

Donald H. Shell

TS The Lamson & Sessions: 1 patents #29 of 75Top 40%
TH Thyssen-Bornemisza: 1 patents #4 of 10Top 40%
Overall (All Time): #2,333,305 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4869766 Method for manufacturing large diameter plastic pipe Harold T. Pate, William R. Laney 1989-09-26
4495970 Large diameter plastic pipe Harold T. Pate, William R. Laney 1985-01-29