| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Ireland | 1 | |
| #6 | New Zealand | 1 | |
| #7 | United States | 1 | |
| #8 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Ladders |
| # | Name | Total Patents |
|---|---|---|
| #1 | Harvey David Henry Charles | 6 |
| #2 | Menelaus Ian Geoffrey | 6 |
| #3 | Menelaus Ian G | 2 |
| #4 | Harvey David H C | 2 |
| #5 | David Henry Charles Harvey | 1 |
| #6 | Ian Geoffrey Menelaus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9104311D0 | Ladder stabiliser | |
| GB8929028D0 | Ladder stabiliser | |
| GB8926215D0 | Ladder leveller | |
| GB8919928D0 | Ladder stabiliser | |
| GB8915498D0 | Ladder footrest | |
| GB8829705D0 | Ladder stabiliser | |
| GB8821487D0 | Ladder leveller | |
| NZ222005A | Stile mounting ladder stabiliser with extended leg | |
| GB8711898D0 | Ladder stabiliser |