Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874399 | Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene) | Marvin E. Jones | 1989-10-17 |
JR
John F. Reed
Overall (1989): #93,321 of 140,708Top 70%
1
Patents 1989