Ayers Patent Model of a Refrigerator Car 1876. This model was filed with the application to the Patent Office for Patent Number 184,029 issued to John M. Ayer on November 7, 1876.

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

Keywords: engineering, industry, work