Specification of Joseph Matthews Hocking
Subtitle: condensing smoke and vapours
Publisher: Great Seal Patent Office
Published: 1867
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces
Notes: At head of title: A.D. 1867, 15th January. No. 101.

"Joseph Matthews Hocking, of  the city of Manchester, in the county of Lancaster."