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Patents Granted on 1931-03-24
Patents 1 - 9 of 9
First set of recordsLast set of records
D83,743Mar. 24, 1931E.M. Bowen, A. OberhoffkenMachine Toolmilling machines
1,797,279Mar. 24, 1931E.J. WitchgerRadius gaugesspecial purpose gauges
1,797,361Mar. 24, 1931B.E. Bark, C.M. ParkAttachment for power drillshandheld power tool accessories
1,797,422Mar. 24, 1931J.V. JardinePipe-threading apparatus
1,797,463Mar. 24, 1931C. CederholmRotary woodworking cuttercutterheads
1,797,547Mar. 24, 1931G.M. ClassLubricating Device for the Ways of Lathesmetalworking machine lubrication
1,797,730Mar. 24, 1931E.M. PfauserSocket Attachment for Toolssocket wrenches
1,798,059Mar. 24, 1931H. Bilgram, M.F. HillMachine for making rotorsgear making machines
1,798,082Mar. 24, 1931E.B. GrutzbachHammer attachment for electric drillshandheld power tool accessories
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