Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4580918 | Writing instrument having plural nibs with one being retractable | Hugh W. B. Baker | 1986-04-08 |
| 4547090 | Writing instrument with nib operated valve | Hugh W. B. Baker, Valerie A. Buckle | 1985-10-15 |