Specification of Joseph Knowles Broadbent
Subtitle: preventing smoke from furnaces
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, 3rd January. No. 19.

"Joseph Knowles Broadbent, of the city of Manchester, in the county of Lancaster."