| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | United States | 4 | |
| #3 | Germany | 1 | |
| #4 | France | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology |
| # | Technology | |
|---|---|---|
| #1 | Electric digital data processing | |
| #2 | Data recognition and presentation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wickham Vivian Humphrey | 2 |
| #2 | Knowles John E | 2 |
| #3 | Cameron Eugene A | 2 |
| #4 | Hamaguchi Roy Itaru | 2 |
| #5 | Knowles John Edwin | 2 |
| #6 | Critser Jack W | 1 |
| #7 | Hamaguchi Roy I | 1 |
| #8 | Wickham Vivian H | 1 |
| #9 | Critser J | 1 |
| #10 | Knowles J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA998135A | Orientation output from graphic digitizer cursor | |
| US3868555A | Line tracing apparatus | |
| CA1017025A | Line following apparatus | |
| CA929248A | Line tracing apparatus | |
| US3636256A | Chart-reading apparatus | |
| CA912145A | Chart reading apparatus |