Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826734 | Tungsten carbide-cobalt coatings for various articles | John E. Jackson, Marianne O. Price, Jean M. Quets | 1989-05-02 |
| 4794680 | Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members, method for producing same and method for working elongate members using the novel friction roll | Richard Hill | 1989-01-03 |