| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | United Kingdom | 4 | |
| #3 | Canada | 3 | |
| #4 | Germany | 3 | |
| #5 | Spain | 3 | |
| #6 | Austria | 2 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Typewriters |
| # | Name | Total Patents |
|---|---|---|
| #1 | Spiro Charles | 3 |
| #2 | Charles Spiro | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB179479A | Typebar action for typewriting machines | |
| DE385566C | Paper guiding device for typewriters | |
| GB138599A | Improvements in line space mechanism for typewriters and like machines | |
| GB141326A | Improvements in paper-tables for typewriters | |
| GB137818A | Improvements in connection with platen rollers for typewriters | |
| US1402264A | Typewriter ribbon vibrator | |
| CA201281A | Paper table | |
| CA201282A | Line space mechanism | |
| CA201280A | Paper feeding mechanism |