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Creation Date 

1. Before 1959  (71,862)
2. 1959 To 1974  (51,266)
3. 1975 To 1990  (209,494)
4. 1991 To 2007  (342,495)
5. After 2007  (712,679)
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New Records 

1. New From Last Week  (750)
2. New From Last Month  (23,445)
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Resource Type 

1. Patents  (1,399,788)
2. Book Chapters  (3)
3. Articles  (1)
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Subject 

1. Mechanical Engineering  (1,399,791)
2. Weapons  (1,399,788)
3. Blasting  (1,399,788)
4. Heating  (1,399,788)
5. Machines Or Engines In General  (1,399,788)
6. Engine Plants In General  (1,399,788)
7. Hot-Gas Or Combustion-Product Engine Plants  (424,469)
8. Combustion Engines  (424,469)
9. Gas-Flow Silencers Or Exhaust Apparatus For Internalcombustion Engines  (389,078)
10. Gas-Flow Silencers Or Exhaust Apparatus For Machines Orengines In General  (389,078)
11. Non-Positive Displacement Machines Or Engines, E.G. Steamturbines  (366,947)
12. Transporting  (278,347)
13. Performing Operations  (278,347)
14. Cyclically Operating Valves For Machines Or Engines  (193,063)
15. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (181,544)
16. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (181,544)
17. General Tagging Of New Technological Developments  (181,544)
18. Combustion Engines In General  (168,281)
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Databases 

1. esp@cenet  (1,399,788)
2. Ebook Central - Academic Complete  (3)
3. ProQuest Central  (1)
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Language 

1. English  (1,119,040)
2. German  (269,368)
3. French  (263,319)
4. Chinese  (182,441)
5. Japanese  (60,540)
6. Korean  (47,712)
7. Russian  (23,473)
8. Spanish  (15,655)
9. Portuguese  (11,162)
10. Italian  (10,835)
11. Swedish  (7,465)
12. Danish  (2,922)
13. Finnish  (2,917)
14. Polish  (2,644)
15. Dutch  (1,958)
16. Norwegian  (1,673)
17. Czech  (1,281)
18. Ukrainian  (882)
19. Romanian  (564)
20. Turkish  (563)
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