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Creation Date 

1. Before 1961  (113)
2. 1961 To 1975  (1,270)
3. 1976 To 1990  (33,979)
4. 1991 To 2006  (180,615)
5. After 2006  (698,204)
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New Records 

1. New From Last Month  (17,544)
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Subject 

1. Physical Or Chemical Processes Or Apparatus In General  (135,040)
2. Handling Thin Or Filamentary Material  (125,378)
3. Conveying  (125,378)
4. Storing  (125,378)
5. Packing  (125,378)
6. Chemistry  (120,346)
7. Metallurgy  (120,346)
8. Vehicles In General  (106,160)
9. Machine Tools  (87,431)
10. Metal-Working Not Otherwise Provided For  (87,431)
11. Separation  (77,752)
12. Working Of Substances In A Plastic State, In General  (68,476)
13. Working Of Plastics  (68,476)
14. Physics  (65,891)
15. Lighting  (63,486)
16. Blasting  (63,486)
17. Heating  (63,486)
18. Mechanical Engineering  (63,486)
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Language 

1. English  (868,402)
2. Chinese  (444,097)
3. French  (45,054)
4. Korean  (40,291)
5. German  (31,621)
6. Japanese  (26,470)
7. Russian  (5,129)
8. Portuguese  (3,067)
9. Spanish  (2,035)
10. Italian  (1,277)
11. Danish  (526)
12. Swedish  (484)
13. Polish  (404)
14. Norwegian  (385)
15. Finnish  (329)
16. Dutch  (226)
17. Ukrainian  (216)
18. Hungarian  (141)
19. Slovenian  (117)
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