Refine My Results

Creation Date 

1. Before 1960  (42,385)
2. 1960 To 1975  (54,122)
3. 1976 To 1991  (233,021)
4. 1992 To 2008  (652,701)
5. After 2008  (1,205,708)
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Subject 

1. Physics  (2,120,035)
2. Cryptography  (2,092,466)
3. Education  (2,092,466)
4. Display  (2,092,466)
5. Advertising  (2,092,466)
6. Seals  (2,092,466)
7. Displaying  (841,754)
8. Labels Or Name-Plates  (841,754)
9. Signs  (841,754)
10. Electricity  (564,153)
11. Educational Or Demonstration Appliances  (471,377)
12. Planetaria  (471,377)
13. Appliances For Teaching, Or Communicating With, The Blind,deaf Or Mute  (471,377)
14. Diagrams  (471,377)
15. Globes  (471,377)
16. Calculating  (422,298)
17. Computing  (422,298)
18. Counting  (422,298)
19. Optics  (336,371)
20. Electric Communication Technique  (301,477)
21. More options 

Databases 

1. esp@cenet  (2,177,261)
2. USPTO Issued Patents  (10,215)
3. USPTO Published Applications  (6,504)
4. Fraunhofer-ePrints  (1)
5. More options 

Language 

1. English  (1,895,100)
2. Chinese  (545,876)
3. French  (241,038)
4. German  (165,936)
5. Korean  (132,309)
6. Japanese  (115,049)
7. Spanish  (23,633)
8. Russian  (19,986)
9. Portuguese  (11,818)
10. Italian  (6,251)
11. Swedish  (3,985)
12. Dutch  (3,410)
13. Ukrainian  (3,130)
14. Danish  (2,728)
15. Finnish  (2,657)
16. Polish  (2,483)
17. Norwegian  (1,799)
18. Czech  (1,365)
19. Turkish  (1,238)
20. Romanian  (702)
21. More options