| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | Switzerland | 4 | |
| #3 | Austria | 3 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Domestic washing | |
| #2 | Measuring volume | |
| #3 | Kitchen equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koschel Wilhelm Dipl Ing | 3 |
| #2 | Grave Guenter | 1 |
| #3 | Guenter Grave | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2216963A1 | DEVICE TO AVOID ELECTROSTATIC CHARGE IN PLASTIC VACUUM CLEANERS |