Specification of George Davies
Subtitle: respiratory apparatus
Publisher: Great Seal Patent Office
Published: 1864
Place of publication: London
Language: eng
Subjects: Gas masks; Breathing apparatus; Underwater breathing apparatus; Mine rescue breathing apparatus
Notes: Cover title.

At head of title: A.D. 1864, 18th April. No. 974.

"George Davies, of No.1, Serle Street, Lincoln's Inn, in the county of Middlesex, and no.28, Saint Enoch Square, in the city of Glasgow, civil engineer and patent agent".