Specification of John Barker
Subtitle: consuming smoke in furnaces
Publisher: Great Seal Patent Office
Published: 1868
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces
Notes: Cover title.

At head of title: A.D. 1867, 9th October. No. 2836.

"John Barker, of Todmorden, in the county of York".