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Creation Date 

1. Before 1983  (1)
2. 1983 To 1985  (9)
3. 1986 To 1986  (1)
4. 1987 To 1988  (3)
5. After 1988  (5)
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Subject 

1. Chemistry  (11)
2. Metallurgy  (11)
3. Lighting  (9)
4. Weapons  (9)
5. Blasting  (9)
6. Heating  (9)
7. Mechanical Engineering  (9)
8. Compositions Of Macromolecular Compounds  (8)
9. Engineering Elements And Units  (8)
10. Miscellaneous Applications Of Materials  (8)
11. Natural Resins  (8)
12. Compositions Based Thereon  (8)
13. Miscellaneous Compositions  (8)
14. Cylinders  (8)
15. General Processes Of Compounding  (8)
16. Adhesives  (8)
17. Dyes  (8)
18. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (8)
19. Materials For Miscellaneous Applications, Not Provided Forelsewhere  (8)
20. After-Treatment Not Covered By Subclasses C08b, C08c, C08f,c08g  (8)
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