Refine My Results

Creation Date 

1. Before 1962  (2,462)
2. 1962 To 1964  (2,785)
3. 1965 To 1967  (4,233)
4. 1968 To 1971  (10,378)
5. After 1971  (25,790)
6. More options 

New Records 

1. New From Last Month  (14)
2. More options 

Subject 

1. Electricity  (13,752)
2. Basic Electronic Circuitry  (5,064)
3. Basic Electric Elements  (5,010)
4. Conversion Or Distribution Of Electric Power  (3,243)
5. Generation  (3,243)
6. Calculating  (2,660)
7. Computing  (2,660)
8. Counting  (2,660)
9. Pulse Technique  (2,397)
10. Tariff Metering Apparatus  (2,355)
11. Arrangements For Measuring Two Or More Variables Not Coveredin A Single Other Subclass  (2,355)
12. Measuring Not Specially Adapted For A Specific Variable  (2,355)
13. Measuring Or Testing Not Otherwise Provided For  (2,355)
14. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (2,146)
15. Electric Communication Technique  (1,692)
16. More options 

Language 

1. English  (34,022)
2. German  (8,015)
3. French  (2,400)
4. Russian  (541)
5. Spanish  (397)
6. Italian  (331)
7. Dutch  (185)
8. Japanese  (134)
9. Danish  (86)
10. Swedish  (73)
11. Finnish  (20)
12. Norwegian  (4)
13. Portuguese  (4)
14. Icelandic  (3)
15. Turkish  (2)
16. Romanian  (1)
17. More options