Scheidler and McNamar Throttle Valve Patent Model. This model was submitted to the Patent Office with the application for the patent issued to Reinhard Scheidler and John H. McNamar, of Newark, Ohio, June 8, 1875, no.

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

Keywords: engineering, industry, work