| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Spain | 5 | |
| #2 | Canada | 4 | |
| #3 | Austria | 2 | |
| #4 | Denmark | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Australia | 1 | |
| #7 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Defordt Jules Frederic | 10 |
| #2 | Richardson Frank Percy | 1 |
| #3 | Richardson Claude Stanley | 1 |
| #4 | Jules Frederic Defordt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA156721A | Variable speed gear | |
| GB191224759A | An Improved Variable Throw Crank. | |
| GB191219597A | An Improved Mechanism for Controlling Epicyclic Variable Speed Gears. | |
| CA222942A | Variable speed transmission mechanism | |
| CA222943A | Free wheel clutch | |
| CA219578A | Free wheel actuating mechanism |