US Patent Office Model
Circa 19th century US Patent office model composed of painted wood with Pat # 207 221 8/20/1878. The model features furnace improvements by W.Swindell with original tag from the United States patent office and collection mark A212, Edison N.J. Patent models were required for all patent applications prior to 1882, each one unique. Made in the United States. Please note of wear consistent with age including minor losses.