| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | Germany | 3 | |
| #3 | France | 3 | |
| #4 | United Kingdom | 3 | |
| #5 | Italy | 3 | |
| #6 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Clutches and brakes | |
| #3 | Gearing | |
| #4 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zugel Martin J | 7 |
| #2 | Zugel M | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US3917424A | Clamping device for couplings | |
| US3844137A | Flexible coupling | |
| US3757609A | Universal index mechanism |