Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846797 | Syringe positioning device for enhancing fluid flow control | David C. Howson, Michael W. Fellinger, Richard M. Altobellis | 1989-07-11 |
| 4834152 | Storage receptacle sealing and transfer apparatus | David C. Howson, Robert E. Havranek, Frederick L. Stone | 1989-05-30 |