Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809102 | Disk file with air filtration system | Michael R. Hatchett | 1989-02-28 |
JH
John S. Heath
Overall (1989): #95,032 of 140,708Top 70%
1
Patents 1989