Theophilus Van Kannel patents the revolving door - August 7th, 1888
August 7, 20239m 10s
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Show Notes
On this day in 1888, American inventor Theophilus Van Kannel was granted a patent for the revolving door.
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Topics
august 6 historyon this day august 6today in history august 6august 6 historical eventsaugust 6 this day in historyrevolving door inventedrevolving door patented1888theophilus van kannelthis day in history classpodcast