| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 5 | |
| #2 | Australia | 3 | |
| #3 | Sweden | 2 | |
| #4 | Germany | 1 | |
| #5 | Italy | 1 | |
| #6 | Norway | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Civil engineering | |
| #3 | Optics | |
| #4 | Machines | |
| #5 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Lighting device details | |
| #2 | Non-portable lighting devices | |
| #3 | Optical systems | |
| #4 | General building constructions | |
| #5 | Unspecified technologies | |
| #6 | Doors and windows | |
| #7 | Special light sources | |
| #8 | Air-conditioning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bartenbach C | 10 |
| #2 | Bartenbach Christian | 2 |
| Publication | Filing date | Title |
|---|---|---|
| AU2544584A | Nonglare light fixture | |
| AU8990782A | Protection device against solar light | |
| ZA7600476B | Room lighting unit | |
| ZA7408232B | A light distributing ceiling structure | |
| US3798443A | Light distributing ceiling structure |