Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834211 | Anchoring element for in-the-ear devices | Frank R. Ring, Jr. | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834211 | Anchoring element for in-the-ear devices | Frank R. Ring, Jr. | 1989-05-30 |