Specification of John Murray and Oliver Harling
Subtitle: consuming smoke in furnaces
Contributors: Harling, Oliver
Publisher: Great Seal Patent Office
Published: 1869
Place of publication: London
Language: eng
Subjects: Smoke prevention; Steam-boilers; Furnaces
Notes: Cover title.

At head of title: A.D. 1868, 1st October. No. 3010.

"John Murray, of Keighley, in the county of York, designer, and Oliver Harling, of Thwaites, near Keighley, aforesaid, mechanic".