Smoke excluding mask patent,1877. Artwork of a smoke mask invented by George Neally to allow people to survive inside a smoke-filled environment such as a burning building. The mask includes moist sponges that filter out smoke particles | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / US Patent And Trademark Office |
Taille de l’image : | 3533 px × 4998 px |
Model Release : | Non requis |
Restrictions : | - |