Difference between revisions of "Patent for a shutter system for stage-lighting spotlights by Joseph H Labrum (Q31194)"
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Latest revision as of 10:42, 2 April 2025
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 |
Statements
1 July 1980
0 references