| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | Switzerland | 5 | |
| #3 | United Kingdom | 3 | |
| #4 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Roof coverings | |
| #2 | General building constructions | |
| #3 | Doors and windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Degenhardt Johannes | 16 |
| Publication | Filing date | Title |
|---|---|---|
| GB190918358A | Improvements in Framings for Sky-lights, Windows, Glass Partitions and the like. | |
| US1095560A | Joint for crossing bars. | |
| GB190510985A | Improvements relating to Glass-roofs | |
| US825895A | Glass roof. | |
| US745310A | Skylight. | |
| GB190207570A | Improvements in Bars used for the Support of Panes of Glass and in the Manner of Glazing the Roofs. |