| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 9 | |
| #2 | Canada | 5 | |
| #3 | Austria | 3 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Machines | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Vehicle brake control systems | |
| #3 | Railway brakes | |
| #4 | Domestic washing | |
| #5 | Unspecified technologies | |
| #6 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kattwinkel Hans | 11 |
| #2 | Hans Kattwinkel | 7 |
| Publication | Filing date | Title |
|---|---|---|
| CA393427A | Multiple disc brake or coupling | |
| CA395674A | Multiple disc clutch and brake | |
| CA393428A | Multiple disc clutch | |
| CA392524A | Clutch or brake cooling means | |
| CA279551A | Power transmission mechanism |