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Creation Date 

1. Before 1920  (1)
2. 1920 To 1929  (1)
3. 1930 To 1979  (2)
4. 1980 To 1986  (3)
5. After 1986  (1)
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Subject 

1. Textiles  (3)
2. Transporting  (3)
3. Performing Operations  (3)
4. Production Of Cellulose  (3)
5. Paper-Making  (3)
6. Doors, Windows, Shutters, Or Roller Blinds In General  (2)
7. Ladders  (2)
8. Fibrous Raw Materials Or Their Mechanical Treatment  (2)
9. Layered Products  (2)
10. Fixed Constructions  (2)
11. Fishing  (1)
12. Forestry  (1)
13. Mechanical Working Of Cane, Cork, Or Similar Materials  (1)
14. Impregnating Or Coating Of Paper  (1)
15. Nailing Or Stapling Machines In General  (1)
16. Agriculture  (1)
17. Human Necessities  (1)
18. Hunting  (1)
19. Animal Husbandry  (1)
20. Biocides, E.G. As Disinfectants, As Pesticides, As Herbicides  (1)
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Language 

1. English  (6)
2. German  (1)
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