CARLSSON ERNST HJALMAR has a total of 14 patent applications. Its first patent ever was published in 1926. It filed its patents most often in Austria, Switzerland and Denmark. Its main competitors in its focus markets civil engineering are COMPACTION TECH SOIL LTD, BEIERLEIN BERNHARD and JIANGXI BOHUI ENGINEERING TECH SERVICE CO LTD.
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Foundations and excavations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carlsson Ernst Hjalmar | 9 |
| #2 | Ernst Hjalmar Carlsson | 4 |
| Publication | Filing date | Title |
|---|---|---|
| ES128884A1 | A new mechanical system for the change of speeds | |
| CA283841A | Road stamping machine |