Patent for A system of circular electric rheostat with a plate and graduated resistance for special application to light distribution mechanisms in theaters., Clemancon, 1922 (Q31813)
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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., Clemancon, 1922 | No description defined |
Statements
16 September 1922Gregorian
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