| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 19 | |
| #2 | Austria | 9 | |
| #3 | Switzerland | 7 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Mechanical elements | |
| #3 | Electrical machinery and energy | |
| #4 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Shafts | |
| #3 | Frames | |
| #4 | Nails | |
| #5 | Semiconductor light sources | |
| #6 | Measuring light |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schrader Goetz | 28 |
| #2 | Goetz Schrader | 6 |
| Publication | Filing date | Title |
|---|---|---|
| DE2333059A1 | Multi-format plate camer - is fitted with casette holders mounted on common slider with separate ground glass screens |