| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 23 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Textiles and paper | |
| #3 | Control | |
| #4 | Optics | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Filing and indexing | |
| #2 | Books | |
| #3 | Copy machines | |
| #4 | Teaching materials | |
| #5 | Processing photographic materials | |
| #6 | Office furniture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lorentz Guenter | 2 |
| #2 | Rudolf Lorentz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB383027A | Improvements in and relating to card indexes | |
| GB357750A | Improvements in and relating to atlases | |
| US1539129A | American journal for bookkeeping purposes |