Specification of Alfred Austin Usher : respirators.

  • Usher, Alfred Austin.
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Alfred Austin Usher : respirators. Source: Wellcome Collection.

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    SR* im. fa'--.K \ ■ - ' . ‘ yN>„ * • ••1 rxV /. ■. v#-* i . ' V ;; '•«••• ' .. / -■ V W- X- - . ••-■*■- A*0* 1868, 3rd March. N° 713. **i*S • S . SPECIFICATION 5r*!» ,X~ ‘ rate. Bite *\g ALFRED AUSTIN USHER. r-, / » WW;. • **•:». . TVjsI f- 2M RESPIRATORS. R*A :? LONDON: PRINTED BY GEORGE E. EYRE AND WILLIAM SPOTTISWOODE, PRINTERS TO THE QUEEN’S MOST EXCELLENT MAJESTY : PUBLISHED AT THE GREAT SEAL PATENT OFFICE, 23, SOUTHAMPTON BUILDINGS, nOLBORN. Ad. 1868. fat m KK ',4 »*> 4 : v' .W ’ >’ • ' , • *'' ;