![](http://www.alamy.com/thumbs/6/FA55A02C-6099-486F-86C5-CFEE34BECBF9/2BF11XF.jpg)
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.
Size: 1938px × 1289px
Photo credit: © SBS Eclectic Images / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: engineering, industry, work