Refine My Results

Creation Date 

1. Before 1960  (969)
2. 1960 To 1975  (1,273)
3. 1976 To 1991  (6,844)
4. 1992 To 2008  (197,312)
5. After 2008  (1,416,542)
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New Records 

1. New From Last Month  (4,054)
2. New From Last 3 Month  (64,916)
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Subject 

1. Transmission Of Digital Information, E.G. Telegraphiccommunication  (708,182)
2. Physics  (490,023)
3. Wireless Communications Networks  (444,463)
4. Pictorial Communication, E.G. Television  (364,874)
5. Calculating  (306,529)
6. Computing  (306,529)
7. Counting  (306,529)
8. Transmission  (216,083)
9. Electric Digital Data Processing  (204,944)
10. Telephonic Communication  (133,015)
11. Public Address Systems  (78,042)
12. Loudspeakers, Microphones, Gramophone Pick-Ups Or Likeacoustic Electromechanical Transducers  (78,042)
13. Deaf-Aid Sets  (78,042)
14. Measuring  (59,181)
15. Testing  (59,181)
16. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (59,006)
17. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (59,006)
18. General Tagging Of New Technological Developments  (59,006)
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Language 

1. English  (1,566,058)
2. Chinese  (838,762)
3. French  (304,544)
4. German  (165,529)
5. Korean  (40,719)
6. Japanese  (21,082)
7. Russian  (6,465)
8. Portuguese  (3,630)
9. Polish  (1,100)
10. Danish  (941)
11. Spanish  (906)
12. Swedish  (871)
13. Norwegian  (858)
14. Finnish  (807)
15. Hebrew  (439)
16. Hungarian  (347)
17. Italian  (171)
18. Dutch  (161)
19. Ukrainian  (103)
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