Difference between revisions of "patent for a light-collecting reflector by Joseph H Labrum (Q31196)"
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(Created claim: Field (P19): lighting and projection (Q7)) |
(Created claim: author (P41): Joseph H Labrum (Q31193)) |
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Revision as of 20:04, 30 April 2023
No description defined
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| English |
patent for a light-collecting reflector by Joseph H Labrum
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No description defined
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