| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | Switzerland | 3 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering | |
| #3 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Roof coverings | |
| #2 | Preparing grain for milling | |
| #3 | Tools for connecting or disengaging | |
| #4 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hahn Friedrich | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US998613A | Window. | |
| GB191022879A | Improvements in Windows. |