Difference between revisions of "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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(Created a new Item: Patent for A system of circular electric rheostat with a plate and graduated resistance for special application to light distribution mechanisms in theaters.) |
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Revision as of 07:34, 27 July 2023
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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 |