| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 15 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Mechanical elements | |
| #3 | Electrical machinery and energy | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Frames | |
| #3 | Mechanical control devices | |
| #4 | Semiconductor light sources | |
| #5 | Hand carried bags |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schrader Goetz | 15 |
| #2 | Goetz Schrader | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB719442A | Adjustor device for parts of apparatus such as photographic apparatus | |
| US2722872A | Control mechanism for the elimination of double-exposures in photographic cameras | |
| GB714038A | Adjustor device for use in apparatus such as photographic apparatus |