Specification of William Stephenson
Subtitle: consuming smoke in furnaces
Publisher: Great Seal Patent Office
Published: 1869
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces
Notes: Cover title.

At head of title: A.D. 1869, 13th May. No.1476.

"William Stephenson, of Sculcoats, in the county of York, engineer".