| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 14 | |
| #2 | Canada | 1 | |
| #3 | Italy | 1 | |
| #4 | Sweden | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements | |
| #3 | Engines, pumps and turbines | |
| #4 | Machines | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Vehicle suspension arrangements | |
| #3 | Springs | |
| #4 | Locomotives | |
| #5 | Motor vehicles | |
| #6 | Railway bodies | |
| #7 | Couplings | |
| #8 | Safety devices | |
| #9 | Supplying combustion engines | |
| #10 | Centrifuges |
| # | Name | Total Patents |
|---|---|---|
| #1 | Durocher Jean | 2 |
| #2 | Durocher J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3937153A | Swinging railway bogie bolster | |
| CA950235A | Reducing axle for abogie |