| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Brazil | 1 | |
| #3 | Canada | 1 | |
| #4 | Denmark | 1 | |
| #5 | Algeria | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Spain | 1 | |
| #8 | Mexico | 1 | |
| #9 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #10 | United States | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | General building constructions | |
| #2 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chiaves Carlo | 8 |
| #2 | Kyaves Karlo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU4546485A | Prefabricated support and covering structure, particularly for constructing tunnels, bridges and the like |