| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | United Kingdom | 3 | |
| #3 | France | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Foods and drinks | |
| #2 | Surface technology and coating | |
| #3 | Chemical engineering | |
| #4 | Textiles and paper | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Dough making machines | |
| #2 | Couplings | |
| #3 | Paper recycling | |
| #4 | Cocoa and sweets | |
| #5 | Mixing | |
| #6 | Metallic material removal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Otto Bertram | 1 |
| #2 | Bertram Otto | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB720004A | Improvements in or relating to a process in the production of pulp by the digestion of cellulosic fibrous vegetable materials by circulation of lye through the materials | |
| GB240160A | Improvements in dough dividing and working machines | |
| US1527622A | Etching machine | |
| GB175998A | Improvements in dough dividing machines |