Fig 1.davy safety lamp fig 2. safety lamp of mackworth vintage engraving. old engraved illustration of old-fashioned davy | CanStock
My Design Lamps a Twitter: "Did you know that the first light bulb was created in 1802. Not by Thomas Edison but Humphry Davy invented the first electric light! #funfact #lamp #light #
MTL
Davy lámpa: Stockvektorképek, képek és vektorábrák | Shutterstock