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- United States21,352
- Great Britain16,251
- China5,024
- Europe4,225
- India4,111
- England4,011
- France3,676
- Japan1,951
- Africa1,935
- South Africa1,927
- Soviet Union1,887
- Canada1,787
- Maine1,702
- Waldo Patent1,670
- East Asia1,612
- Germany1,592
- Developing countries1,519
- New York (State)1,478
- European Union countries1,413
- Asia1,406