Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896998 | Vibratory screening apparatus | Ola Bjorklund, Alexander F. Ritchie | 1999-04-27 |
| 5615776 | Mounting & tensioning arrangements for screens | Ola Bjorklund, Alexander F. Ritchie | 1997-04-01 |
| 5137622 | Filter screen assembly | — | 1992-08-11 |
| 5076921 | Filtering screens | Marshall G. Bailey | 1991-12-31 |