Specification of Joseph Matthews Hocking
Subtitle: condensing noxious smoke and vapours
Publisher: Great Seal Patent Office
Published: 1867
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces; Air Pollution; Prevention & control
Notes: At head of title: A.D. 1868, 31st July. No. 2212.

"Joseph Matthews Hocking, of Marshal Keate, Poplar, in the county of Middlesex."