Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638589 | Method and apparatus for using recycled plastic material, and a plastic product made by an extruder | — | 2003-10-28 |
| 6585924 | Heat fusion fitting | David Charles Harget | 2003-07-01 |
| 6550500 | Plastic pipe having a socket, and a method of providing a plastic pipe with a socket | Esko Hippeläinen | 2003-04-22 |
| 6551534 | Method and arrangement for cooling an extruded hollow product | Kari Kirjavainen | 2003-04-22 |