| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 3 | |
| #2 | United States | 3 | |
| #3 | Austria | 1 | |
| #4 | Belgium | 1 | |
| #5 | German Democratic Republic | 1 | |
| #6 | Spain | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Israel | 1 | |
| #9 | Italy | 1 | |
| #10 | Japan | 1 | |
| #11 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Optical systems | |
| #3 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rotter Johann | 6 |
| #2 | Yohan Rotsutaa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES468044A1 | Optical projection apparatus | |
| US3894800A | Projector | |
| GB1282311A | Optical device |