Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692581 | Anti-slip device for ladder rungs | Richard Forbes Donald-Hill | 1997-12-02 |
| 5645912 | Anti-skid staircase treads | Richard Forbes Donald-Hill | 1997-07-08 |
| D379265 | Portable computer carrying case | David Wathen | 1997-05-20 |
| 5592528 | Battery charging and signalling interconnect arrangement for craftsperson's | Gregory J. Pettit, Tim G. Godfrey, Wayne Wong | 1997-01-07 |