| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 11 | |
| #2 | United Kingdom | 3 | |
| #3 | Germany | 2 | |
| #4 | Switzerland | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Percussive tools | |
| #2 | Earth drilling | |
| #3 | Tools for connecting or disengaging | |
| #4 | Turning | |
| #5 | Unspecified technologies | |
| #6 | Clutches and brakes | |
| #7 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fernand Dosmond Pierre Robert | 1 |
| #2 | Dosmond Pierre-Robert-Fernan | 1 |
| #3 | Desmond Pierre Robert Fernand | 1 |
| #4 | De Meudon Forges Ateliers | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE802691C | Method and device for producing boreholes | |
| US2586924A | Portable pneumatic drill with automatic adjustment of the tool thrust and torque | |
| GB627597A | Apparatus for the boring of blast holes | |
| GB389144A | Improvements in or relating to pneumatic percussive tools | |
| GB389492A | Improvements in or relating to pneumatic percussive tools |