| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | United States | 2 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Semiconductors | |
| #2 | Measurement | |
| #3 | Environmental technology | |
| #4 | Electrical machinery and energy | |
| #5 | Machine tools | |
| #6 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ernst Presser | 2 |
| #2 | Presser Ernst | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2161786A | Photoelectric cells of the layer type and method of producing the same | |
| US2330620A | Photovoltaic cell and method of manufacturing the same | |
| GB416553A | Improvements in or relating to exposure-meters for photographic purposes |