Improvement in machinery for elevating and transporting coal, coke or other material, and for the charging and discharging of gas retorts, as applied to the manufacture of illuminating gas
Subtitle: designed and patented by Thos. F. Rowland, M.E., Brooklyn (Green Point), King's County, N.Y., 1873
Publisher: G.F. Nesbitt
Published: 1873
Place of publication: New York
Language: eng