| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 7 | |
| #2 | Germany | 2 | |
| #3 | United States | 2 | |
| #4 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Machines | |
| #3 | Computer technology | |
| #4 | Basic materials chemistry | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Printing processes | |
| #2 | Typewriters | |
| #3 | Copy machines | |
| #4 | Unspecified technologies | |
| #5 | Unspecified technologies | |
| #6 | Structural elements | |
| #7 | Coating compositions | |
| #8 | Data recognition and presentation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Robert Koreska | 2 |
| #2 | Schutzner Walter | 1 |
| #3 | Kramer Johann | 1 |
| #4 | Weber Josef | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1128247A | Duplicating materials | |
| GB1023004A | Copying material | |
| GB701980A | Typewriter and ink ribbon mechanism therefor | |
| US2685357A | Endless ribbon feeding mechanism for typewriters | |
| GB687009A | Improvements in or relating to carbon paper | |
| US2341627A | Printing machine with rotatable stencils and automatic ink supply | |
| CA757013A | Copying and recording materials |