| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Austria | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Spain | 2 | |
| #5 | United States | 2 | |
| #6 | Canada | 1 | |
| #7 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Packaging and shipping | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Separating solids using liquids | |
| #2 | Transport or storage devices | |
| #3 | Finishing work on buildings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Velten Hugo | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US1089606A | Ore-dressing apparatus. | |
| CA150050A | Ore dressing apparatus | |
| GB191300502A | Improvements relating to Ore Dressing Apparatus. | |
| DE250977C | Processing device that works by means of an ascending current | |
| GB191013210A | Improvements in Mechanical Staircases. | |
| GB190904244A | Improvements in Conveyors. | |
| US1046511A | Conveyer. |