Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4225302 | Tank forming mandrel with tank bottom mold | Kenneth D. Pfeifer, Robert M. Sommerkamp | 1980-09-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4225302 | Tank forming mandrel with tank bottom mold | Kenneth D. Pfeifer, Robert M. Sommerkamp | 1980-09-30 |