Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303970 | Outdoor loudspeaker | Martin Collins | 1989-10-10 |
| 4840635 | Full-fashion stump shrinker for the residual limb of a human amputee | Martha M. Field, Lawrence K. Pierce, Jeffrey C. Dalbey | 1989-06-20 |
| 4832379 | Collet grip riser fitting | Edward B. Smith, III, Elmer V. Rogers Jr., John A. Spisak | 1989-05-23 |