| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 9 | |
| #2 | Norway | 4 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | Australia | 1 | |
| #5 | Canada | 1 | |
| #6 | Denmark | 1 | |
| #7 | Spain | 1 | |
| #8 | Finland | 1 | |
| #9 | Netherlands | 1 | |
| #10 | United States | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Springer Johann | 5 |
| #2 | Morris George H | 4 |
| #3 | Mitchell Robert Forbes | 3 |
| #4 | Appleton Robert Patrick | 2 |
| #5 | Stronach Graham Robert | 1 |
| #6 | Mitchell Robert F | 1 |
| #7 | Gilbert Horace E | 1 |
| #8 | Stronach Graham R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9007023D0 | Junk mill | |
| GB8908014D0 | A milling tool stabiliser | |
| GB8904251D0 | Downhole milling tool and cutter therefor | |
| GB8707803D0 | Drilling string stabiliser | |
| GB8620362D0 | Milling tool | |
| GB8620363D0 | Energy exploration | |
| GB8518192D0 | Releasable spear | |
| GB8416970D0 | Releasable spear | |
| GB8405488D0 | Releasable spear for pipes |