Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4580918 | Writing instrument having plural nibs with one being retractable | Ivor J. M. Fehr | 1986-04-08 |
| 4551035 | Marking instrument | Robert D. White | 1985-11-05 |
| 4551038 | Writing instrument tip | Graham Whiting | 1985-11-05 |
| 4547090 | Writing instrument with nib operated valve | Valerie A. Buckle, Ivor J. M. Fehr | 1985-10-15 |
| 4362174 | Toothbrushes | Charles C. Packham, Norman C. Welsh | 1982-12-07 |