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All Patents in class 177/220
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
1,993,592	Mar. 05, 1935	F.M. Carroll	Weighing scale
2,607,580	Aug. 19, 1952	M.W. Romig	Pendulum scale
3,436,968	Apr. 08, 1969	P.I. Unger, E.D. Bright	Processing Control System	electronic circuitry and apparatus

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