Refine My Results

Creation Date 

1. Before 1960  (814)
2. 1960 To 1975  (5,012)
3. 1976 To 1991  (30,682)
4. 1992 To 2008  (88,812)
5. After 2008  (117,656)
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New Records 

1. New From Last Month  (6,303)
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Subject 

1. Semiconductor Devices  (111,491)
2. Electric Solid State Devices Not Otherwise Provided For  (111,491)
3. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (50,245)
4. Conversion Or Distribution Of Electric Power  (35,412)
5. Generation  (35,412)
6. Magnets  (29,823)
7. Inductances  (29,823)
8. Transformers  (29,823)
9. Selection Of Materials For Their Magnetic Properties  (29,823)
10. Line Connectors  (26,697)
11. Current Collectors  (26,697)
12. Circuit Arrangements Or Systems For Supplying Or Distributingelectric Power  (25,411)
13. Systems For Storing Electric Energy  (25,411)
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Language 

1. English  (209,502)
2. Chinese  (32,261)
3. French  (30,861)
4. German  (30,093)
5. Korean  (17,675)
6. Japanese  (16,500)
7. Spanish  (1,223)
8. Russian  (859)
9. Portuguese  (676)
10. Swedish  (488)
11. Polish  (451)
12. Italian  (449)
13. Finnish  (365)
14. Dutch  (285)
15. Danish  (185)
16. Norwegian  (145)
17. Ukrainian  (121)
18. Bulgarian  (111)
19. Romanian  (104)
20. Czech  (85)
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