Carhart Balanced Valve, Patent Model
National Museum of American History

Carhart Balanced Valve, Patent Model

Carhart, John W. · 1866

brass (overall material)
National Museum of American History
CC0 — Public Domain
National Museum of American History

This model was submitted to the U.S. Patent Office with the application for the patent issued to John W. Carhart, of Troy, New York, March 27, 1866, no. 53410.

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