| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 81 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Medical technology | |
| #3 | Electrical machinery and energy | |
| #4 | Measurement | |
| #5 | Control | |
| #6 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Diagnosis and surgery | |
| #3 | Optical systems | |
| #4 | Spectacles | |
| #5 | Non-portable lighting devices | |
| #6 | Measuring light | |
| #7 | Teaching materials | |
| #8 | Measuring length, angles and areas | |
| #9 | Special information storage | |
| #10 | Lighting device details |
| # | Name | Total Patents |
|---|---|---|
| #1 | Thorner Dr Walther | 12 |
| #2 | Walther Thorner Dr | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE627322C | Anti-glare screen, consisting of two prismatically profiled glass panes with their profiled surfaces, separated by a narrow air gap |