| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | Australia | 2 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Name | Total Patents |
|---|---|---|
| #1 | Erich Langguth | 2 |
| #2 | Langguth Erich | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE656432C | Process for the production of large surface electrodes | |
| DE435704C | Obtaining a chlorine-free blende by fusing sulfidic lead-zinc ores with chlorine-zinc, chlor-alkali | |
| AU1241214B | Process of extracting silver-lead and blende outof mixed ores | |
| AU58404B | Improvement in electromagnetic ore separators | |
| GB469453A | Method of producing electrodes having a large surface-area for use in electric accumulators |