Specification of Arnold Hirst Watkins : respirators.

  • Watkins, Arnold Hirst.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Arnold Hirst Watkins : respirators. Source: Wellcome Collection.

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    A.D. 18 'w 22nd November. N” 3056. SPECIFICATION OF *vg ■ ARNOLD HIRST WATKINS. WM RESPIRATORS. life -JsS f!, r,.. LONDONt r PRINTED BY GEORGE E. EYRE AND WILLIAM SPOTTISWOODE, PRINTERS TO THE QUEEN*S MOST EXCELLENT MAJESTY: PUBLISHED AT THE GREAT SEAL PATENT OFFICE, 25, SOUTHAMPTON BUILDINGS, HOLBORN. FHeeM 1871.