turning cylinder color changer (Q39061)
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Revision as of 09:49, 22 July 2025 by ChrisVG (talk | contribs) (Created claim: Property:P19: Item:Q7)
first known color changer for electrical light
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | turning cylinder color changer | first known color changer for electrical light |