Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355905 | Adjustable plug seal mechanism for heat transfer zone separation in hollow screws for extrusion machines | Walter A. Trumbull | 1982-10-26 |
HL
Harold E. St. Louis
Overall (1982): #60,515 of 81,411Top 75%
1
Patents 1982