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Creation Date 

1. Before 1998  (253)
2. 1998 To 2002  (125)
3. 2003 To 2007  (712)
4. 2008 To 2013  (1,355)
5. After 2013  (2,587)
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Subject 

1. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (3,845)
2. Chemistry  (2,067)
3. Metallurgy  (2,067)
4. Transporting  (1,838)
5. Performing Operations  (1,838)
6. Lighting  (1,690)
7. Weapons  (1,690)
8. Blasting  (1,690)
9. Heating  (1,690)
10. Mechanical Engineering  (1,690)
11. Technical Subjects Covered By Former Uspc  (1,253)
12. Technical Subjects Covered By Former Us Classification  (1,093)
13. Climate Change Mitigation Technologies Related To Wastewatertreatment Or Waste Management  (1,061)
14. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (939)
15. Machines Or Engines For Liquids  (511)
16. Producing Mechanical Power  (511)
17. Or A Reactive Propulsive Thrust, Not Otherwise Provided For  (511)
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