Theophilus_Van_Kannel
Theophilus Van Kannel
American inventor (1841-1919)
Theophilus Van Kannel (1841 – December 24, 1919) was an American inventor, known for inventing the revolving door, patented on August 7, 1888.[1][2]
American inventor (1841-1919)
Theophilus Van Kannel (1841 – December 24, 1919) was an American inventor, known for inventing the revolving door, patented on August 7, 1888.[1][2]
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