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Patents Granted on 1917-12-25
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,251,263Dec. 25, 1917T. MelderBacking Off Attachment for Lathesbacking off attachments
1,251,437Dec. 25, 1917J. StenitzerSurface Gagesurface gauges
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