Patent for a shutter system for stage-lighting spotlights by Joseph H Labrum (Q31194)
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Revision as of 19:54, 30 April 2023 by ChrisVG (talk | contribs) (Created claim: Property:P11: Item:Q98)
No description defined
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for a shutter system for stage-lighting spotlights by Joseph H Labrum | No description defined |