File:Dimmer Patent Fortuny FR694028A Original document 20210307111703.pdf
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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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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 11:21, 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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