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All Patents in class 235/140
Patents 1 - 5 of 5
Number	Date	Patentee	Title	Type
130,017	Jul. 30, 1872	H. Chandler	Counting Machine
498,793	Jun. 06, 1893	E.P. Holly	Cash Register	cash registers
622,091	Mar. 28, 1899	J.A. Turck	Adding-machine and register
1,437,353	Nov. 28, 1922	J.W. Parker	Revolution counter	rpm speed gauges and tachometers
2,129,979	Sep. 13, 1938	A. Kaufmann, G.L. Storm, C. Westervelt	Measuring Device	measurement gauges

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