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All Patents in class 29/458
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
319,144	Jun. 02, 1885	N. Stephens, M.L. Ritchie	Method of utilizing old boiler-tubes
3,251,605	May 17, 1966	E.J. Ondeck	Quick Release Chuck	drill press chucks
3,470,598	Oct. 07, 1969	V. Berthelsen	Method of making structural elements

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