Patents for Watts, Campbell Co.


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Patents for Watts, Campbell Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	330,361	Nov. 10, 1885	J. Young	Cut-off gear for steam-engines
	337,644	Mar. 09, 1886	J. Young	Dash-pot for steam-engines
	381,747	Apr. 24, 1888	J. Young	Valve-gear