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1. Before 1960  (4,727)
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New Records 

1. New From Last Month  (360)
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Resource Type 

1. Patents  (53,945)
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Subject 

1. Lighting  (51,640)
2. Weapons  (51,598)
3. Blasting  (51,598)
4. Heating  (51,598)
5. Mechanical Engineering  (51,598)
6. Engineering Elements And Units  (17,871)
7. Thermal Insulation In General  (17,871)
8. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (17,871)
9. Transporting  (10,523)
10. Performing Operations  (10,523)
11. Ventilating  (7,988)
12. Ranges  (7,988)
13. Means For Thermal Insulation In General  (5,012)
14. Joints Or Fittings For Pipes  (5,012)
15. Pipes  (5,012)
16. Supports For Pipes, Cables Or Protective Tubing  (5,012)
17. Combustion Apparatus  (4,990)
18. Combustion Processes  (4,990)
19. Electricity  (4,428)
20. Air-Conditioning, Air-Humidification, Ventilation, Use Of Aircurrents For Screening  (4,010)
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Databases 

1. esp@cenet  (53,945)
2. Europeana Collections  (55)
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2. English  (3,507)
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