Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880076 | Hearing aid ear piece having disposable compressible polymeric foam sleeve | Carl S. Ahlberg, Davis W. Chamberlin, Jerold W. Bushong, Vasant V. Kolpe | 1989-11-14 |
RO
Robert J. Oliveira
Overall (1989): #61,818 of 140,708Top 45%
1
Patents 1989