Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401320 | Method of simultaneously making a plurality of metallic pipes | Manfred A. A. Lupke | 2002-06-11 |
| 6399002 | Method of making a pipe with coupling conforming to pipe diameter | Manfred A. A. Lupke | 2002-06-04 |
| 6372161 | Operation of a mold block with air flow control | Manfred A. A. Lupke | 2002-04-16 |
| 6352425 | Rotating disk extruder | Manfred A. A. Lupke | 2002-03-05 |