| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | South Africa | 2 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Spain | 1 | |
| #8 | Hungary | 1 | |
| #9 | Ireland | 1 | |
| #10 | India | 1 | |
| #11 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Machines | |
| #2 | Internal-combustion piston engines | |
| #3 | Unspecified technologies | |
| #4 | Elevators and escalators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wenker Ludwig | 11 |
| #2 | Ludwig Wenker | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3634061A1 | Universal multi-purpose lift for travelling mainly vertically, encircling sectional girders of different cross-sections | |
| DE3531187A1 | Thrust-converting device with automatic hydraulic/adjustment for piston machines | |
| DE3405893A1 | INTERNAL COMBUSTION ENGINE |