File:Dimmer Patent Fortuny FR694028A Original document 20210307111703.pdf

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Revision as of 11:21, 7 March 2021 by ChrisVG (talk | contribs) (a patent for a dimmer system that keeps the colour temperature constant. source https://worldwide.espacenet.com/patent/search/family/000462145/publication/ DE199428C?q=FORTUNY%20MARIANO)
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Dimmer_Patent_Fortuny_FR694028A_Original_document_20210307111703.pdf(file size: 360 KB, MIME type: application/pdf)

Summary

a patent for a dimmer system that keeps the colour temperature constant. source https://worldwide.espacenet.com/patent/search/family/000462145/publication/ DE199428C?q=FORTUNY%20MARIANO

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current11:21, 7 March 2021 (360 KB)ChrisVG (talk | contribs)a patent for a dimmer system that keeps the colour temperature constant. source https://worldwide.espacenet.com/patent/search/family/000462145/publication/ DE199428C?q=FORTUNY%20MARIANO

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