| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | France | 3 | |
| #3 | Austria | 1 | |
| #4 | Switzerland | 1 |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes | |
| #2 | Macromolecular compounds compositions | |
| #3 | Containers for goods storage | |
| #4 | Working-up pitch |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gesellschaft Fuer Strahlungsch | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE511869C | Packaging sleeve for tars, bitumen, etc. Like. Solid or semi-solid substances | |
| DE549520C | Process for the production of a refined tar | |
| DE529237C | Beam exit window for cathode or X-ray tubes | |
| DE507075C | Electric lamp in which a luminescent lamp is excited by body radiation | |
| DE526783C | Process for refining bituminous substances by adding resins | |
| DE494783C | Electric light tubes |