| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 13 | |
| #2 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Packaging and shipping | |
| #4 | Machines | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Gearing | |
| #3 | Clutches and brakes | |
| #4 | Cranes | |
| #5 | Unspecified technologies | |
| #6 | Preparing clay | |
| #7 | Motor vehicles | |
| #8 | Vehicle suspension arrangements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roger Metailler | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US3172552A | Hydraulic control system for selfpropelled excavator | |
| US3113641A | Arrangement of lateral spades for an earthmoving appliance mounted on pneumatic tires |