| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 19 | |
| #2 | France | 4 | |
| #3 | Switzerland | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Audio-visual technology | |
| #3 | Basic communication technologies | |
| #4 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lachner Friedrich | 2 |
| #2 | Rohne Franz | 2 |
| #3 | Kotzmann Karl Ing | 1 |
| #4 | Pavelka Friedrich Dr | 1 |
| #5 | Schrack Aktien-Gesellschaft Ra | 1 |
| #6 | Pawelka Friedrich Dr | 1 |
| #7 | Schrack Eduard | 1 |
| #8 | Hacht Werner Von | 1 |
| #9 | Schrack Eduard Dr | 1 |
| #10 | Hacht Werner V | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB362086A | Improvements in or relating to electron tubes |