Inglés | Alemán | |
---|---|---|
Patent | ||
Patent | low-pressure mercury vapour discharge lamp | Rapid-Start-Lampe |
Lighting | ||
Lighting | low pressure sodium vapour lamp | Natriumdampf-Niederdrucklampe [f] |
Lighting | low pressure mercury vapour lamp | Quecksilberdampf-Niederdrucklampe [f] |