Specification of Julius Jeffreys : respirators.

  • Jeffreys, Julius, 1800-1877.
Date:
1857
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Credit

Specification of Julius Jeffreys : respirators. Public Domain Mark. Source: Wellcome Collection.

About this work

Description

Patent for improvements to his previous design for a respirator.

Publication/Creation

London : Great Seal Patent Office, 1857 (London : George E. Eyre and William Spottiswoode)

Physical description

5 pages, 1 folded leaf of plates : illustrations ; 28 cm

Contributors

Notes

Cover title.
At head of title: A.D. 1850. No. 12,984.
"Julius Jeffreys, of Bucklersbury, in the city of Surrey, gentleman".

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Where to find it

  • Location Access
    Closed stores
    Pat. vol. 22:2

    Note

  • LocationStatusAccess
    Closed stores
    Pat. vol. 22

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