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- United States21,353
- Great Britain16,253
- China5,039
- Europe4,225
- India4,111
- England4,012
- France3,675
- Japan2,083
- Africa1,936
- South Africa1,926
- Soviet Union1,887
- Canada1,787
- Maine1,702
- Waldo Patent1,670
- East Asia1,614
- Germany1,592
- Developing countries1,520
- New York (State)1,478
- European Union countries1,413
- Asia1,408