Ashcroft's patent balanced furnace doors
Subtitle: patented in the United States, England and the Canadas
Publisher: Frothingham & Workman
Published: 1874
Place of publication: Montreal
Language: eng
Other titles: Patent improved arrangement of grate bars
Notes: Broadside.

"Ashcroft's patented May 5, 1874".

Title on verso: The patent improved arrangement of grate bars.