Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D298158 | Roller skate | Robert S. McKay | 1988-10-18 |
| 4670991 | Drawing machine | Robert S. McKay, William D. Nelson | 1987-06-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D298158 | Roller skate | Robert S. McKay | 1988-10-18 |
| 4670991 | Drawing machine | Robert S. McKay, William D. Nelson | 1987-06-09 |