Refine My Results

Creation Date 

1. Before 1968  (110)
2. 1968 To 1979  (3,278)
3. 1980 To 1991  (4,084)
4. 1992 To 2004  (12,196)
5. After 2004  (23,249)
6. More options 

Subject 

1. Technical Subjects Covered By Former Uspc  (25,255)
2. Technical Subjects Covered By Former Us Classification  (19,748)
3. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (18,864)
4. Transporting  (17,735)
5. Performing Operations  (17,735)
6. Lighting  (13,058)
7. Weapons  (13,058)
8. Blasting  (13,058)
9. Heating  (13,058)
10. Mechanical Engineering  (13,058)
11. Chemistry  (12,196)
12. Metallurgy  (12,196)
13. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (7,150)
14. Human Necessities  (5,906)
15. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (5,040)
16. Physics  (4,976)
17. Engineering Elements And Units  (4,850)
18. More options 

Language 

1. English  (12,114)
2. French  (1,730)
3. Portuguese  (1)
4. Korean  (1)
5. More options