Difference between revisions of "Process for achieving coloured light effects for stage purposes. Addition to patent 280509 Von Salzmann (Q22947)"
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Revision as of 08:44, 13 March 2025
No description defined
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Process for achieving coloured light effects for stage purposes. Addition to patent 280509 Von Salzmann | No description defined |
Statements
24 October 1913Gregorian
0 references