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Creation Date 

1. Before 1971  (18)
2. 1971 To 1982  (103)
3. 1983 To 1994  (372)
4. 1995 To 2007  (1,783)
5. After 2007  (8,682)
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Subject 

1. Physics  (7,900)
2. Electricity  (6,500)
3. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (5,334)
4. Measuring  (4,566)
5. Testing  (4,566)
6. Conversion Or Distribution Of Electric Power  (4,302)
7. Generation  (4,302)
8. Calculating  (3,783)
9. Computing  (3,783)
10. Counting  (3,783)
11. Circuit Arrangements Or Systems For Supplying Or Distributingelectric Power  (3,664)
12. Systems For Storing Electric Energy  (3,664)
13. Measuring Magnetic Variables  (2,951)
14. Measuring Electric Variables  (2,951)
15. Arrangements For Measuring Two Or More Variables Not Coveredin A Single Other Subclass  (2,336)
16. Measuring Not Specially Adapted For A Specific Variable  (2,336)
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Language 

1. English  (10,037)
2. Chinese  (3,361)
3. French  (1,674)
4. German  (613)
5. Japanese  (587)
6. Korean  (430)
7. Russian  (70)
8. Polish  (20)
9. Spanish  (15)
10. Swedish  (12)
11. Finnish  (11)
12. Danish  (8)
13. Czech  (6)
14. Portuguese  (6)
15. Lithuanian  (2)
16. Norwegian  (2)
17. Italian  (2)
18. Dutch  (1)
19. Bulgarian  (1)
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