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FIRE ESCAPE PATENT, 1882
Fire escape patent, 1882. Artwork of a fire escape friction device invented by Oscar F. Davis. The device allowed a person to control the speed of descent down a rope. (KEYSTONE/SCIENCE PHOTO LIBRARY/US PATENT AND TRADEMARK OFFICE/SCIENCE PHOTO LIBRARY)
Instruktionen
COPYRIGHTPFLICHTIG
Lizenz
Rights Managed
Erstellungsdatum
Ort
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
US PATENT AND TRADEMARK OFFICE
Grösse
2427 x 3640 px
Dateityp
JPEG