| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 56 | |
| #2 | France | 11 | |
| #3 | United Kingdom | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Basic materials chemistry | |
| #3 | Engines, pumps and turbines | |
| #4 | Foods and drinks | |
| #5 | Thermal processes | |
| #6 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Fuels | |
| #3 | Fluid fuel combustion | |
| #4 | Beer | |
| #5 | Cyclically operating valves | |
| #6 | Containers for goods storage | |
| #7 | Rotary-pistons | |
| #8 | Belts or cables for driving | |
| #9 | Acetylene production | |
| #10 | Elevators and escalators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hartmann Wilhelm | 14 |
| #2 | Wilhelm Hartmann | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB325523A | Improvements in or relating to corn or grain silos | |
| DE467000C | Fingernail cleaners and polishes | |
| US1531182A | Gripping mechanism for cinematographic cameras and projecting apparatus | |
| DE516063C | Device for distributing the flow of grain when filling grain silos by means of a rotating shovel system |