Specification of Michael Henry
Subtitle: purifying smoke
Publisher: Great Seal Patent Office
Published: 1865
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces; Soot
Notes: At head of title: A.D. 1865, 7th April. No. 1001.

"Michael Henry, of 84, Fleet Street, in the city of London, patent agent"