| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 3 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Australia | 2 | |
| #4 | Canada | 2 | |
| #5 | Denmark | 2 | |
| #6 | Finland | 2 | |
| #7 | United Kingdom | 2 | |
| #8 | Israel | 2 | |
| #9 | Norway | 2 | |
| #10 | United States | 2 | |
| #11 | Brazil | 1 | |
| #12 | Egypt | 1 | |
| #13 | Spain | 1 | |
| #14 | Greece | 1 | |
| #15 | Hong Kong | 1 | |
| #16 | Italy | 1 | |
| #17 | Republic of Korea | 1 | |
| #18 | New Zealand | 1 | |
| #19 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Computer technology | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Teaching materials | |
| #2 | Data recognition and presentation | |
| #3 | Unspecified technologies | |
| #4 | Money sorting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frazer Stephen Oliver | 16 |
| #2 | Riddiford Martin Phillip | 9 |
| #3 | Riddiford Martin Philip | 7 |
| #4 | Riddiford Martin P | 3 |
| #5 | Frazer Stephen O | 3 |
| #6 | Riddiford M P | 2 |
| #7 | Burrows Roger I | 1 |
| #8 | Frazer Oliver Stephen | 1 |
| #9 | Munford John Roy | 1 |
| #10 | Frazer S O | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8926654D0 | Security print detectors | |
| GB8702728D0 | Teaching & amusement apparatus | |
| US4627819A | Teaching or amusement apparatus | |
| US4604065A | Teaching or amusement apparatus | |
| EG16735A | Teaching or amusement apparatus | |
| BR8304916A | Appliance for teaching or entertaining | |
| CA1182635A | Teaching or amusement apparatus |