| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 11 | |
| #2 | EPO (European Patent Office) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pumps | |
| #3 | Pipes | |
| #4 | Soldering, welding and flame cutting |
| # | Name | Total Patents |
|---|---|---|
| #1 | North John Herbert | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB8527733D0 | Sucker rods | |
| GB8428425D0 | Sucker rods | |
| EP0138603A2 | Improvements in or relating to rods and pipes | |
| EP0145154A1 | Improvements in or relating to rods | |
| GB8327678D0 | Paraffin scraper | |
| GB8327644D0 | Heavy wall pipe | |
| GB8327466D0 | Insulated tubing | |
| GB8326653D0 | Sucker rod | |
| GB8326655D0 | Hollow rod end production | |
| GB8326654D0 | Rod connector | |
| GB8326656D0 | Wide diameter hollow rods | |
| GB8326657D0 | Closed reservoir dampened pumping apparatus |