Refine My Results

Creation Date 

1. Before 1978  (51,401)
2. 1978 To 1980  (85,129)
3. 1981 To 1983  (93,158)
4. 1984 To 1987  (133,379)
5. After 1987  (144,069)
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New Records 

1. New From Last Week  (4)
2. New From Last Month  (3,061)
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Subject 

1. Physics  (506,430)
2. Measuring  (287,955)
3. Testing  (287,955)
4. Measuring Magnetic Variables  (183,866)
5. Measuring Electric Variables  (183,866)
6. Controlling  (173,097)
7. Regulating  (173,097)
8. Electricity  (145,265)
9. Systems For Controlling Or Regulating Non-Electric Variables  (127,289)
10. Tariff Metering Apparatus  (97,301)
11. Arrangements For Measuring Two Or More Variables Not Coveredin A Single Other Subclass  (97,301)
12. Measuring Not Specially Adapted For A Specific Variable  (97,301)
13. Measuring Or Testing Not Otherwise Provided For  (97,301)
14. Cryptography  (76,578)
15. Education  (76,578)
16. Display  (76,578)
17. Advertising  (76,578)
18. Seals  (76,578)
19. Transporting  (60,214)
20. Performing Operations  (60,214)
21. More options 

Language 

1. English  (446,536)
2. German  (45,870)
3. French  (36,459)
4. Russian  (14,550)
5. Italian  (7,008)
6. Spanish  (4,879)
7. Swedish  (4,866)
8. Korean  (3,783)
9. Dutch  (3,177)
10. Finnish  (2,358)
11. Portuguese  (2,298)
12. Danish  (1,869)
13. Norwegian  (1,659)
14. Polish  (1,371)
15. Romanian  (1,113)
16. Japanese  (372)
17. Bulgarian  (216)
18. Hungarian  (136)
19. Turkish  (46)
20. Chinese  (27)
21. More options