All Patents in class 226/109


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All Patents in class 226/109
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
644,310	Feb. 27, 1900	F. Harrington, L.C. Woerner	Multiple Spindle Screw Machine	screw machines
876,814	Jan. 14, 1908	H.B. Lester	Automatic Screw Machine	screw machines