Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873821 | Apparatus and process for forming alternate twist plied yarn | Donald E. Hallam, Harold F. Staunton, Robert Edward Taylor, Paul W. Yngve | 1989-10-17 |
| 4860610 | Wound rotor element and centrifuge fabricated therefrom | William E. Velvel | 1989-08-29 |