| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Machine tools | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Harvesting | |
| #3 | Handles for hand implements | |
| #4 | Belts or cables for driving | |
| #5 | Punching metal | |
| #6 | Agricultural harvest processing | |
| #7 | Rotary pistons | |
| #8 | Tools for connecting or disengaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dueppengiesser Karl-August | 6 |
| #2 | Dueppengiesser Karl August | 6 |
| #3 | Foedisch Hans | 2 |
| #4 | Dueppengiesser Helmut | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB896225A | Improvements in or relating to spades, shovels or similar implements | |
| GB881224A | Improvements in or relating to digging implements | |
| GB859462A | Improvements in or relating to handle grips for digging implements |