Websters Patent Model of a HotAir Furnace ca 1866. This model was filed with the application to the Patent Office for Patent Number 55,564 issued to Edward W. Webster of Hartford, Connecticut on June 12, 1866.

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

Keywords: engineering, industry, work