| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | Belgium | 2 | |
| #3 | Switzerland | 2 | |
| #4 | France | 2 | |
| #5 | Netherlands | 2 | |
| #6 | Italy | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Consumer goods | |
| #3 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Advertising | |
| #2 | Books | |
| #3 | Special furniture | |
| #4 | Filing and indexing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Langhorst Carsten | 7 |
| #2 | Carsten Langhorst | 1 |
| #3 | Langhorst C | 1 |
| #4 | Feldhusen Johann | 1 |
| #5 | Johann Feldhusen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3607664A1 | Book with stiff pages, in particular sample book | |
| DE3245730A1 | Book with stiff pages, in particular specimen book | |
| CH628172A5 | Cardboard, particularly sample book. | |
| DE2747931A1 | Cloth sample book page attachment - has hinge and block arrangement allowing pages to be opened in staggered formation | |
| DE2713736A1 | Cloth sample book page attachment - has hinge and block arrangement allowing pages to be opened in staggered formation |