Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7776248 | Socketing of pipe | George Macovaz, Joshua Stanley Gotham | 2010-08-17 |
| 6296804 | Biaxial stretching of plastic tubes | Jyri Jarvenkyla | 2001-10-02 |
| 6153132 | Control method for the manufacture of oriented plastic tubes | Allan K. Wallace | 2000-11-28 |
| 6053210 | Expandable plug and control method | Allan K. Wallace, Leslie Herbert Cowling | 2000-04-25 |
| 6050800 | Sizing apparatus | Allan K. Wallace, Leslie Herbert Cowling, Eino Holso, Jyri Jarvenkyla | 2000-04-18 |
| 5526847 | Pipes with integral sockets | George Macovaz, Jyri Jarvenkyla | 1996-06-18 |