Jack-o-lantern patent,1903. Artwork of a helmet designed by Jon Du Ket. The decorated cardboard helmet is illuminated from within by candle. The obvious fire hazard of using cardboard with naked flame was not addressed in the patent | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US Patent And Trademark Office |
Bildgröße: | 3533 px × 4998 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |