| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Belgium | 2 | |
| #3 | Germany | 2 | |
| #4 | Austria | 1 | |
| #5 | Canada | 1 | |
| #6 | France | 1 | |
| #7 | Italy | 1 | |
| #8 | Netherlands | 1 | |
| #9 | Sweden | 1 | |
| #10 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Furniture and games | |
| #3 | Civil engineering | |
| #4 | Organic fine chemistry |
| # | Technology | |
|---|---|---|
| #1 | Ships | |
| #2 | Games | |
| #3 | Finishing work on buildings | |
| #4 | Swimming pools | |
| #5 | Heterocyclic compounds | |
| #6 | Household appliances |
| # | Name | Total Patents |
|---|---|---|
| #1 | Duerr Max | 6 |
| #2 | Max Duerr | 2 |
| #3 | Durr Max | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2834656A1 | WATER SPORTS EQUIPMENT |