| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | Germany | 4 | |
| #3 | Belgium | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Measuring distances |
| # | Name | Total Patents |
|---|---|---|
| #1 | Blumer Mathias | 5 |
| #2 | Gasser Walter | 4 |
| #3 | Blaser Ulrich | 2 |
| #4 | Kuenzle Josef | 2 |
| #5 | Blumer Mathias Dipl Ing | 2 |
| #6 | Walter Gasser | 2 |
| #7 | Rudolf Lehmann | 1 |
| #8 | Lehmann Rudolf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CH638851A5 | Method for cutting through a bituminous covering and device for carrying out the method | |
| DE2611254A1 | Device to record profile of road - has carriage with two axles having one fixed wheel each and fifth wheel in measurement plane | |
| US3625121A | Apparatus for producing supporting layers or road surfaces |