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Creation Date 

1. Before 1961  (261)
2. 1961 To 1976  (1,662)
3. 1977 To 1992  (5,610)
4. 1993 To 2009  (16,139)
5. After 2009  (44,790)
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New Records 

1. New From Last Month  (3,949)
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Subject 

1. Electricity  (29,871)
2. Vehicles In General  (29,107)
3. Basic Electric Elements  (18,089)
4. Electrodynamic Brake Systems For Vehicles, In General  (17,544)
5. Electric Equipment Or Propulsion Of Electrically-Propelledvehicles  (17,544)
6. Magnetic Suspension Or Levitation For Vehicles  (17,544)
7. Conversion Or Distribution Of Electric Power  (13,105)
8. Generation  (13,105)
9. Circuit Arrangements Or Systems For Supplying Or Distributingelectric Power  (8,920)
10. Systems For Storing Electric Energy  (8,920)
11. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (8,581)
12. Vehicles, Vehicle Fittings, Or Vehicle Parts, Not Otherwiseprovided For  (8,167)
13. Conveying  (7,340)
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Language 

1. English  (55,595)
2. Chinese  (19,391)
3. German  (10,606)
4. French  (9,852)
5. Korean  (4,503)
6. Japanese  (2,449)
7. Spanish  (565)
8. Portuguese  (291)
9. Russian  (284)
10. Italian  (184)
11. Swedish  (177)
12. Polish  (88)
13. Finnish  (82)
14. Dutch  (76)
15. Danish  (73)
16. Norwegian  (50)
17. Czech  (35)
18. Hungarian  (28)
19. Romanian  (26)
20. Ukrainian  (24)
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