Refine My Results

Creation Date 

1. Before 1960  (9,642)
2. 1960 To 1975  (14,605)
3. 1976 To 1991  (60,764)
4. 1992 To 2008  (141,853)
5. After 2008  (871,243)
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New Records 

1. New From Last Month  (6,066)
2. New From Last 3 Month  (60,949)
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Subject 

1. Physics  (245,720)
2. Basic Electric Elements  (193,045)
3. Transporting  (155,292)
4. Performing Operations  (155,292)
5. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (124,858)
6. Vehicles In General  (118,955)
7. Calculating  (94,715)
8. Computing  (94,715)
9. Counting  (94,715)
10. Control Or Regulation Thereof  (94,296)
11. Conversion Of Dc Or Ac Input Power Into Surge Outputpower  (94,296)
12. Electrodynamic Brake Systems For Vehicles, In General  (91,959)
13. Electric Equipment Or Propulsion Of Electrically-Propelledvehicles  (91,959)
14. Magnetic Suspension Or Levitation For Vehicles  (91,959)
15. Measuring  (89,302)
16. More options 

Language 

1. English  (897,280)
2. Chinese  (472,703)
3. French  (132,289)
4. German  (99,382)
5. Japanese  (73,046)
6. Korean  (50,112)
7. Spanish  (7,764)
8. Russian  (6,954)
9. Portuguese  (4,593)
10. Swedish  (2,160)
11. Italian  (1,787)
12. Danish  (1,445)
13. Polish  (1,379)
14. Finnish  (1,118)
15. Norwegian  (647)
16. Dutch  (578)
17. Ukrainian  (421)
18. Turkish  (355)
19. Romanian  (335)
20. Czech  (320)
21. More options