| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Austria | 2 | |
| #3 | Belgium | 1 | |
| #4 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Measurement | |
| #3 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Measuring speed and acceleration | |
| #3 | Planting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Burkhard Hans | 8 |
| #2 | Hans Burkhard | 3 |
| Publication | Filing date | Title |
|---|---|---|
| CA726579A | Device for scattering particulate material over road surfaces |