| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 27 | |
| #2 | France | 1 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Packaging and shipping | |
| #3 | Mechanical elements | |
| #4 | Organic fine chemistry | |
| #5 | Machines | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Transport or storage devices | |
| #3 | Safety devices | |
| #4 | Milling | |
| #5 | Venting or aerating devices | |
| #6 | Railway systems | |
| #7 | Belts or cables for driving | |
| #8 | Winches | |
| #9 | Earth drilling | |
| #10 | Heterocyclic compounds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Steinkopf Wilhelm | 20 |
| #2 | Schuerhoff Dipl-Ing Albert | 4 |
| #3 | Weber Dipl-Ing Hans | 1 |
| #4 | Kirchhoff Georg | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB787860A | Improvements in mine props |