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Photos» Show All «Prev «1 ... 3803 3804 3805 3806 3807 3808 3809 3810 3811 ... 10663» Next» » Slide Show Loading... Emil patented a cast iron skylight in 1870 https://www.collectionscanada.ca/archivianet/patents/001038-119.01-e.php?&patent_id_nbr=10524&page_sequence_nbr=1&interval=20&page_id_nbr=31456&
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