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All Patents in class 408/116
Patents 1 - 6 of 6
First set of recordsLast set of records
341,378May 04, 1886W.E. GwyerSpirit Level for Boring Bitslevels
757,494Apr. 19, 1904W. PohlmanExpansion Boring Toolboring heads
1,144,795Jun. 29, 1915E.C. SchmelzkopfBoring Barboring bars
1,305,872Jun. 03, 1919B. BollieMicrometer Drilling Gagespecial purpose gauges
2,537,517Jan. 09, 1951C.B. De VliegMetal cutting toolboring bars
2,849,902Sep. 02, 1958C.B. De Vlieg, A.N. SweenyPresetting boring bar and tool holderboring bars
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