| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Israel | 2 | |
| #6 | Canada | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Turning | |
| #3 | Grinding tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edgerley David | 5 |
| #2 | Coulter Ian James Hamilton | 4 |
| #3 | Edgerley David Anthony | 4 |
| #4 | Blakelock Dennis | 4 |
| #5 | Lacy Graham Keith | 3 |
| #6 | Coulter Ian J H | 1 |
| #7 | Edgerley David A | 1 |
| #8 | Lacy Graham K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU3639793A | Improvements in or relating to sharpening | |
| US5241791A | Edge tool sharpening apparatus | |
| GB9204640D0 | Tool sharpening apparatus | |
| GB9017981D0 | Abrading device | |
| GB8703912D0 | Collet holder for an elongate member | |
| GB8703911D0 | Sharpening apparatus | |
| GB8521644D0 | Sharpening device for secateurs, loppers and pruning knives |