Category
page 1Electronics companies established in 1920
Rinnai
Rinnai Corporation is a Japanese multinational company based in Nagoya, Japan, that manufactures gas appliances, including energy-efficient tankless water heaters, home heating appliances, kitchen appliances, gas clothes dryers and commercial-use equipment such as rice cookers, grillers, fryers and salamanders.
Stanley Electric
Japanese company producing electric light sources
Mullard
thumb|upright|A Mullard TDD4 valve. The gold spray coating served no purpose other than to hide the blackened interior, as Mullard valves were still manufactured using the azide process, long abandoned by other makers.
upright|thumb|A Mullard EL34 power pentode
thumb|An EL84 valve made in Russia in the 21st century