Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830719 | Method for etching piston rings | Johnathan D. Philby, Alan D. Pope, David F. Spence, David R. Eastham | 1989-05-16 |
| 4817791 | Combination suitcase-garment bag | — | 1989-04-04 |