Specification of Tobias Michell
Subtitle: apparatus for washing and purifying the smoke and vapours arising from furnaces
Publisher: Great Seal Patent Office
Published: 1854
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces
Notes: Cover title.

At head of title: A.D. 1837. No.7463.

"Tobias Michell, of Kingsland Green, in the county of Middlesex, gentleman".