Refine My Results

Creation Date 

1. Before 1960  (347,762)
2. 1960 To 1975  (397,087)
3. 1976 To 1991  (1,241,929)
4. 1992 To 2008  (1,789,382)
5. After 2008  (4,248,022)
6. More options 

New Records 

1. New From Last Week  (230,465)
2. More options 

Resource Type 

1. Patents  (8,076,850)
2. Articles  (2)
3. More options 

Subject 

1. Fixed Constructions  (8,076,850)
2. Building  (2,719,968)
3. Earth Drilling  (1,372,642)
4. Mining  (1,372,642)
5. Soil Shifting  (1,181,762)
6. Hydraulic Engineering  (1,181,762)
7. Foundations  (1,181,762)
8. Window Or Door Fittings  (1,067,521)
9. Keys  (1,067,521)
10. Safes  (1,067,521)
11. Locks  (1,067,521)
12. Transporting  (1,066,945)
13. Performing Operations  (1,066,945)
14. Ceilings  (965,766)
15. Floors  (965,766)
16. Insulation Or Other Protection Of Buildings  (965,766)
17. Roofs  (965,766)
18. Walls, E.G. Partitions  (965,766)
19. General Building Constructions  (965,766)
20. Earth Drilling, E.G. Deep Drilling  (945,314)
21. More options 

Databases 

1. esp@cenet  (8,076,850)
2. DOAJ Directory of Open Access Journals  (2)
3. More options 

Language 

1. English  (6,465,090)
2. Chinese  (2,455,321)
3. French  (850,466)
4. German  (781,633)
5. Korean  (287,732)
6. Japanese  (193,943)
7. Spanish  (160,557)
8. Russian  (160,253)
9. Italian  (71,095)
10. Portuguese  (69,417)
11. Swedish  (45,404)
12. Norwegian  (43,059)
13. Finnish  (35,385)
14. Polish  (33,459)
15. Danish  (31,266)
16. Dutch  (28,717)
17. Czech  (10,033)
18. Ukrainian  (7,857)
19. Turkish  (7,241)
20. Romanian  (5,215)
21. More options