Patent # 635,876
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November 20, 1832
Patented in 1881 by Obadiah Sherwood of East Fairfield.
"My invention contemplates certain improvements in portable extension-ladders or tire escapes, adapted for a short truck, so that it can readily turn corners and be used in narrow streets, where a long truck could not well be managed."
Feb 26 1867 Pat # 62,459