Specification of Edwin Bray, John Crosby Hargreaves, and Francis Henry Stubbs
Subtitle: apparatus for consuming smoke
Contributors: Hargreaves, John Crosby; Stubbs, Francis Henry
Publisher: Great Seal Patent Office
Published: 1870
Place of publication: London
Language: eng
Subjects: Smoke prevention; Boilers
Notes: Cover title.

At head of title: A.D. 1870 5th March. No. 657.

"Edwin Bray, of Fulneck, John Crosby Hargreaves, of Hunslet, and Francis Henry Stubbs, of Hunslet, near Leeds, in the county of York".