| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 3 | |
| #2 | United States | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Canada | 2 | |
| #5 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Measurement | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Measuring force, work and fluid pressure | |
| #3 | Pipes | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Raulins George M | 12 |
| #2 | Grimmer George G | 3 |
| #3 | Peterson James Lee | 2 |
| #4 | Grimmer Georg G | 1 |
| #5 | Peterson James L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4964305A | Method and apparatus for gaging pipe threads | |
| US4726424A | Well apparatus | |
| EP0212288A2 | Improved oilfield tubular joint and method of manufacturing | |
| US4685521A | Well apparatus |