Patent for A system of circular electric rheostat with a plate and graduated resistance for special application to light distribution mechanisms in theaters. (Q31813)
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Revision as of 07:35, 27 July 2023 by ChrisVG (talk | contribs) (Created claim: Property:P19: Item:Q7)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for A system of circular electric rheostat with a plate and graduated resistance for special application to light distribution mechanisms in theaters. | No description defined |