Specification of George Harman Barth
Subtitle: inhaling apparatus
Publisher: Great Seal Patent Office
Published: 1869
Place of publication: London
Language: eng
Subjects: Respiratory Therapy; Instrumentation
Description: Patent for "apparatus for administering and supplying and purifying gases or vapours for medicinal and other purposes".
Notes: At head of title: A.D. 1868, 17th September. No. 2867.

"George Harman Barth, chymist, of The Lodge, no. 111, Westbourne Grove, Bayswater, in the county of Middlesex".