| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 2 | |
| #2 | United Kingdom | 2 | |
| #3 | Italy | 2 | |
| #4 | United States | 2 | |
| #5 | Belgium | 1 | |
| #6 | Canada | 1 | |
| #7 | Germany | 1 | |
| #8 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Typewriters | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perry R | 2 |
| #2 | Perry Richard Anthony | 1 |
| #3 | Perry R A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA930242A | Impact hammer for line printer | |
| US3730082A | Impact line printer | |
| US3949665A | Belt and carrier for high speed printer |