| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 16 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 2 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Processing photographic materials | |
| #2 | Cameras | |
| #3 | Toys |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lesjak Michael | 3 |
| #2 | Michael Lesjak | 2 |
| #3 | Wilhelm Kehr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2693138A | Daylight developing tank for roll films having protective paper strips | |
| GB466319A | Daylight developing tank for photographic roll films | |
| GB466276A | Daylight developing tank for photographic roll films | |
| US2082962A | Developing tank for roll films | |
| GB156564A | Improvements in means for protecting photographic plates during manipulation in change-boxes and the like |