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- 11:21, 7 March 2021 ChrisVG talk contribs created page File:Dimmer Patent Fortuny FR694028A Original document 20210307111703.pdf (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)
- 11:21, 7 March 2021 ChrisVG talk contribs uploaded File:Dimmer Patent Fortuny FR694028A Original document 20210307111703.pdf (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)