Specification of William Brown Rooff
Subtitle: construction of respirators
Publisher: Great Seal Patent Office
Published: 1857
Place of publication: London
Language: eng
Subjects: Breathing apparatus; Respirators (Medical equipment)
Notes: Cover title.

At head of title: A.D. 1848. No. 12,273.

"William Brown Rooff, of Stanhope Street, Regent's Park, in the county of Middlesex, chemist."