Specification of William Bickford Smith and William Bennetts
Subtitle: preventing the escape of smoke and gases from chimneys and furnaces
Contributors: Bennetts, William
Publisher: Great Seal Patent Office
Published: 1862
Place of publication: London
Language: eng
Subjects: Smoke prevention; Sulfur; Chimneys; Furnaces
Notes: Cover title.

At head of title: A.D. 1862, 1st May. No. 1288.

"William Bickford Smith, of Camborne, in the county of Cornwall, merchant and William Bennetts, of Tucking Mill,  in the county of Cornwall, engineer"