| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | Switzerland | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | France | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kalweit Ferdinand | 11 |
| #2 | Ferdinand Kalweit | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB190603236A | Improvement in Girders, Beams, and Posts. | |
| US797963A | Building construction. | |
| GB190222480A | Improvements in Building-blocks. |