Specification of William Edward Kenworthy and John Johnstone
Subtitle: consuming smoke
Contributors: Johnstone, John
Publisher: Great Seal Patent Office
Published: 1854
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces; Steam-boilers
Notes: Cover title.

At head of title: A.D. 1871, 28th April. No. 1127.

"William Edward Kenworthy, and John Johnstone, both of Leeds in the county of York".