Specification of George Harman Barth
Subtitle: apparatus for administering gases for curative purposes
Publisher: Great Seal Patent Office
Published: 1854
Place of publication: London
Language: eng
Subjects: Machinery; Oxygen; Therapeutic use; Nitric Oxide; Oxygen Inhalation Therapy
Notes: At head of title: A.D. 1854. No. 641.

"George Harman Barth, of 4, Mornington Crescent, Hampstead Road, in the county of Middlesex, medical galvanist".