Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8499731 | Central valve of a camshaft adjuster of an internal combustion engine | Hubert Burkard | 2013-08-06 |
| 5725921 | Liner for protecting poles against sub-soil decay | Graham David Shelver | 1998-03-10 |