Refine My Results

Creation Date 

1. Before 1960  (9,460)
2. 1960 To 1975  (14,729)
3. 1976 To 1991  (46,103)
4. 1992 To 2008  (144,661)
5. After 2008  (324,911)
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New Records 

1. New From Last Month  (18,985)
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Subject 

1. Electric Communication Technique  (100,744)
2. Physics  (93,267)
3. Transmission  (77,953)
4. Measuring  (47,623)
5. Testing  (47,623)
6. Radio Direction-Finding  (34,870)
7. Analogous Arrangements Using Other Waves  (34,870)
8. Radio Navigation  (34,870)
9. Locating Or Presence-Detecting By Use Of The Reflection Orreradiation Of Radio Waves  (34,870)
10. Determining Distance Or Velocity By Use Of Radio Waves  (34,870)
11. Calculating  (33,862)
12. Computing  (33,862)
13. Counting  (33,862)
14. Transporting  (32,536)
15. Performing Operations  (32,536)
16. Waveguides  (27,526)
17. Resonators, Lines, Or Other Devices Of The Waveguide Type  (27,526)
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Language 

1. English  (455,238)
2. Chinese  (134,221)
3. French  (93,154)
4. German  (66,303)
5. Korean  (28,020)
6. Japanese  (22,976)
7. Russian  (6,253)
8. Spanish  (5,570)
9. Portuguese  (3,070)
10. Swedish  (2,652)
11. Italian  (1,963)
12. Finnish  (1,518)
13. Norwegian  (1,032)
14. Danish  (829)
15. Polish  (737)
16. Dutch  (630)
17. Hebrew  (282)
18. Ukrainian  (232)
19. Turkish  (176)
20. Czech  (172)
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