Specification of Julius Jeffreys
Subtitle: climatic apparatus
Publisher: Great Seal Patent Office
Published: 1864
Place of publication: London
Language: eng
Subjects: Respirators (Medical equipment)
Description: Patent for a device functioning along the lines of a respirator. Its actual intented aim is not made clear.
Notes: Cover title.

At head of title: A.D. 1864, 25th July. No. 1849.

"Julius Jeffreys, of Drymona, Upper Norwood, in the county of Surrey".