Official Patent Office in the world
| Australia
| Austria | Argentina
| Algeria
| andorra
| Belgium | Brazil
| Bahamas
| Bulgaria
| China Hongkong
| Canada | Czech
| Cuba | Denmark
| England (U.K.) | Egypt
| France | Finland
| Germany | Greece
| Hungary | Italy
| Israel
| Ireland
| Japan | Korea,
South | Luxembourg | Liechtenstein
| Malaysia | Mexico
| The Netherlands | Norway
| Newzealand
| Nepal
| Portugal | Philippines
| Russia | Switzerland
| Sweden | Singapore
| Spain
| South Africa
| Taiwan | Thailand
| Turkey
| United States | Yugoslavia
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