Specification of James Gowing and Henry Bull
Subtitle: apparatus for the prevention of smoke, applicable to tubular boilers
Contributors: Bull, Henry
Publisher: Great Seal Patent Office
Published: 1858
Place of publication: London
Language: eng
Subjects: Smoke prevention; Boilers
Notes: Cover title.

At head of title: A.D. 1858, 3rd March. No. 420.

"James Gowing, of Poplar, in the county of Middlesex, engineer, and Henry Bull, of Greenwich, in the county of Kent, engineer".