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All Patents in class 408/202
Patents 46 - 47 of 47
Number	Date	Patentee	Title	Type
2,308,055	Jan. 12, 1943	S.A. Cogsdill	Adjustable countersink structure	metalworking countersinks
2,823,563	Feb. 18, 1958	W. Nipken	Depth control attachment for a drill or the like	drilling and boring

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