| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 73 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Transport | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | General building constructions | |
| #3 | Shaping clay | |
| #4 | Cranes | |
| #5 | Roof coverings | |
| #6 | Structural elements | |
| #7 | Motor vehicles | |
| #8 | Load transportation vehicles | |
| #9 | Pistons and sealings | |
| #10 | Transport or storage devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ludowici Wilhelm Dr-Ing | 73 |
| Publication | Filing date | Title |
|---|---|---|
| DE820802C | Frost-resistant and waterproof cover for the eaves of buildings | |
| DE972944C | False pan tile |