| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | Canada | 3 | |
| #4 | Denmark | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Electrical machinery and energy | |
| #4 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Percussive tools | |
| #3 | Handling thin material | |
| #4 | Installation of electric cables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kinnan Frank R | 15 |
| #2 | Kinnan Frank Ross | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA2056948A1 | Method and apparatus for subsoil drilling | |
| EP0485052A1 | Boring head and method for directional drilling in the ground | |
| US5054565A | Steering mechanism for a subsoil boring apparatus | |
| US4957173A | Method and apparatus for subsoil drilling | |
| US4923134A | Self-propelled subsoil penetrating tool system | |
| US4858703A | Self-propelled subsoil penetrating tool system |