Refine My Results

Creation Date 

1. Before 1960  (35,002)
2. 1960 To 1975  (76,011)
3. 1976 To 1991  (240,843)
4. 1992 To 2008  (326,333)
5. After 2008  (878,051)
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New Records 

1. New From Last Month  (59,251)
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Subject 

1. Machine Tools  (1,196,579)
2. Metal-Working Not Otherwise Provided For  (1,196,579)
3. Working By Laser Beam  (1,176,548)
4. Soldering Or Unsoldering  (1,176,548)
5. Welding  (1,176,548)
6. Cutting By Applying Heat Locally, E.G. Flame Cutting  (1,176,548)
7. Cladding Or Plating By Soldering Or Welding  (1,176,548)
8. Lighting  (349,485)
9. Weapons  (349,485)
10. Blasting  (349,485)
11. Heating  (349,485)
12. Mechanical Engineering  (349,485)
13. Chemistry  (266,567)
14. Metallurgy  (266,567)
15. Electricity  (207,198)
16. Liquefaction Solidification Of Gases  (138,729)
17. Combined Heating And Refrigeration Systems  (138,729)
18. Heat Pump Systems  (138,729)
19. More options 

Language 

1. English  (1,260,374)
2. Chinese  (494,964)
3. French  (181,775)
4. German  (174,594)
5. Korean  (64,698)
6. Japanese  (61,070)
7. Russian  (22,654)
8. Spanish  (18,981)
9. Portuguese  (9,899)
10. Italian  (8,395)
11. Swedish  (6,275)
12. Polish  (3,662)
13. Danish  (3,443)
14. Finnish  (3,367)
15. Dutch  (3,316)
16. Norwegian  (2,978)
17. Ukrainian  (1,459)
18. Romanian  (1,146)
19. Czech  (875)
20. Hungarian  (754)
21. More options