| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 8 | |
| #2 | Germany | 2 | |
| #3 | Canada | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Springs | |
| #2 | Vehicle tyre repairing | |
| #3 | Vehicle suspension arrangements | |
| #4 | Tools for connecting or disengaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Houdry Eugene | 1 |
| #2 | Eugene Houdry | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1540734A | Laminated suspension spring for automobiles and other vehicles | |
| DE398094C | Vibration damper for leaf springs, especially of motor vehicles | |
| DE405221C | Vibration damper for leaf springs, especially of motor vehicles | |
| CA241855A | Laminated spring |