| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 3 | |
| #2 | Spain | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Austria | 2 | |
| #5 | Denmark | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Laffas Jean Marie | 7 |
| #2 | Jean Marie Laffas | 2 |
| #3 | Laffas Jean-Marie | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US669120A | Bearing. | |
| GB190014236A | Improvements in and connected with Bearings. | |
| GB190001765A | Improvements in or connected with Apparatus for AutomaticallyApplying the Brakes of Railway Vehicles. | |
| GB189726458A | Improvements in Safety Apparatus for Railway Lines. |