| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Electrical machinery and energy | |
| #3 | Basic materials chemistry | |
| #4 | Materials and metallurgy | |
| #5 | Engines, pumps and turbines | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Optical systems | |
| #3 | Materials for miscellaneous applications | |
| #4 | Electric discharge tubes | |
| #5 | Treatment of glass | |
| #6 | Machines | |
| #7 | Wheelchairs and sledges |
| # | Name | Total Patents |
|---|---|---|
| #1 | Danzer Josef Helmuth | 10 |
| Publication | Filing date | Title |
|---|---|---|
| GB776964A | Self-erecting camera with tubular lens mounting, with automatic distance-setting and coupling of the distance-setting arrangement with the range-finder | |
| GB709497A | Internal combustion engine and associated power transfer system | |
| GB718917A | Improvements in photographic cameras wherein the film-winding mechanism is coupled to the shutter-setting mechanism |