Improvements in respirators / [Julius Wolff].

  • Wolff, Julius.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in respirators / [Julius Wolff]. Source: Wellcome Collection.

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    A.D. 1896. Nov, 26. N.” 27,118. WOLFF’S CoMi’LRTE Specification. 0 SLLKETJ M aJ by i: So n s, Ph oto-U th o. [This Drawing is wreprodnxDxfriofihe OrigmcdoTta^reduccdscale]