Veras Patent Model of a Friction Heater ca 1869. This model was filed with the application to the Patent Office for Patent Number 86,046 issued to Pedro Vera of Bogota, United States of Colombia, on January 19, 1869. Mr.

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Size: 1289px × 1938px
Photo credit: © SBS Eclectic Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: engineering, industry, work