| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | United Kingdom | 5 | |
| #3 | Austria | 4 | |
| #4 | Denmark | 2 | |
| #5 | United States | 2 | |
| #6 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Separating solids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zarniko Gerhard | 19 |
| Publication | Filing date | Title |
|---|---|---|
| GB190925881A | Improvements in Grinding Mills. | |
| US958348A | Sieve for drum-mills. | |
| CA114617A | Drum mill | |
| GB190816724A | Improvements in Drum Mills for Grinding or Crushing | |
| US741606A | Grinding-mill. | |
| GB190215791A | Improvements in Grinding Mills. | |
| GB190115533A | Improvements in Apparatus for Feeding and Mixing with Air Fine, Granular or Pulverulent Substances. | |
| GB189909361A | Improvements in Plan-sifters. |