| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 6 | |
| #2 | United States | 3 | |
| #3 | Germany | 2 | |
| #4 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Shafts | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tiraspolsky Wladimir | 8 |
| #2 | Rouviere Roger Francois | 3 |
| #3 | Wladimir Tiraspolsky | 3 |
| #4 | Laguilharre Louis | 2 |
| #5 | Francois Rouviere Roger | 1 |
| #6 | Roger Rouviere | 1 |
| #7 | Rouviere Roger-Francois | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR1340987A | Drill bit for rock drilling | |
| FR1339585A | Turbocharging | |
| FR1313308A | Continuous sampling method and device applicable to drilling | |
| FR1311336A | Longer life drill turbine | |
| FR1297304A | Drill bit for soil drilling | |
| FR1294866A | Diamond drill bit for soil drilling | |
| US3055440A | Turbo-coredrill for ground drilling | |
| US3039735A | Motor for subterranean work |