Refine My Results

Creation Date 

1. Before 1961  (2,091)
2. 1961 To 1976  (13,071)
3. 1977 To 1992  (45,454)
4. 1993 To 2009  (156,771)
5. After 2009  (275,620)
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New Records 

1. New From Last Month  (1,185)
2. New From Last 3 Month  (13,179)
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Subject 

1. Line Connectors  (199,643)
2. Current Collectors  (199,643)
3. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (74,719)
4. Emergency Protective Devices  (71,961)
5. Selectors  (71,961)
6. Electric Switches  (71,961)
7. Relays  (71,961)
8. Semiconductor Devices  (69,307)
9. Electric Solid State Devices Not Otherwise Provided For  (69,307)
10. Physics  (53,438)
11. Transporting  (45,235)
12. Performing Operations  (45,235)
13. Electric Techniques Not Otherwise Provided For  (39,672)
14. Conversion Or Distribution Of Electric Power  (37,757)
15. Generation  (37,757)
16. Lighting  (33,614)
17. Blasting  (33,614)
18. Heating  (33,614)
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Language 

1. English  (424,089)
2. French  (92,246)
3. German  (86,745)
4. Chinese  (80,763)
5. Japanese  (34,741)
6. Korean  (27,180)
7. Spanish  (6,558)
8. Portuguese  (2,639)
9. Italian  (2,286)
10. Russian  (2,069)
11. Swedish  (1,193)
12. Danish  (1,141)
13. Norwegian  (859)
14. Dutch  (790)
15. Polish  (787)
16. Finnish  (723)
17. Hungarian  (298)
18. Czech  (194)
19. Turkish  (135)
20. Slovenian  (116)
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