| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 68 | |
| #2 | United Kingdom | 5 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Packaging and shipping | |
| #3 | Machine tools | |
| #4 | Engines, pumps and turbines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Safety devices | |
| #3 | Transport or storage devices | |
| #4 | Construction of roads | |
| #5 | Machines for making railways | |
| #6 | Nails | |
| #7 | Punching metal | |
| #8 | Percussive tools | |
| #9 | Dredging | |
| #10 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Reppel Wilhelm | 64 |
| #2 | Klotz Heinrich | 2 |
| #3 | Holz Heinrich | 2 |
| #4 | Leimstoll Emil | 1 |
| #5 | Sachser Paul | 1 |
| #6 | Ruhl Karl | 1 |
| #7 | Schepers Willy | 1 |
| #8 | Kappert Franz | 1 |
| #9 | Ostmann Alfred | 1 |
| #10 | Groetschel Dipl-Berging Karl M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1004122B | Multi-part pit stamp | |
| GB775671A | Improvements in or relating to pit props and their manufacture | |
| GB742628A | Improvements in or relating to multi-part pit props | |
| GB736254A | Improvements relating to beams or girders | |
| GB729171A | Improvements relating to beams for mine supports | |
| GB721507A | Improvements in or relating to pit props and the like and their manufacture |