Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304903 | Stapler | John Leszczak, William H. Valls | 1989-12-05 |
| D304734 | Swivel rotary file | John Leszczak | 1989-11-21 |
| D304735 | Covered swivel rotary file | John Leszczak | 1989-11-21 |
| 4831677 | Sponge mop | Keith Morrison, William H. Valls, Peter M. MacDonald | 1989-05-23 |