| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | Austria | 7 | |
| #3 | Switzerland | 7 | |
| #4 | France | 5 | |
| #5 | United States | 3 | |
| #6 | Canada | 1 | |
| #7 | Denmark | 1 | |
| #8 | Finland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Measuring light | |
| #3 | Analysing materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frantisek Koubek | 3 |
| #2 | Koubek Frantisek | 2 |
| #3 | Kreminsky Frantisek | 2 |
| #4 | Jan Hampl | 2 |
| #5 | Hampl Dipl-Ing Jan | 2 |
| #6 | Frantisek Kreminsky | 2 |
| #7 | Bedrich Kafka | 2 |
| #8 | Hampl Jan | 1 |
| #9 | Frantisek Kieminsky | 1 |
| #10 | Chytil Slavomir | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3000283A | Photoelectric exposimeter for photographic or moving-picture pick-up camera | |
| US3011417A | Device for swivelling the objective of panoramic cameras | |
| DE1126642B | Image projector with slide magazine | |
| US2929296A | Slide changing device | |
| CA614583A | Slide changing device |