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Patents for Pratt & Whitney Co.
Patents 226 - 240 of 261
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NumberDatePatenteeTitleType
1,536,736May 05, 1925A.W. Erdman, P.F. VokalProcess of Making Milling Cuttersmilling machine cutters
1,540,899Jun. 09, 1925F. MüllerCombined Metal Cutting Machineturret lathes
1,543,242Jun. 23, 1925F.C. AllenMilling machinemilling machines
1,545,052Jul. 07, 1925W.E. InghamLathe feeding mechanismmetal lathes
1,545,074Jul. 07, 1925J.J. ThacherTailstockautomatic lathes
1,547,514Jul. 28, 1925P.M. MuellerThread Testing Devicethread gages
1,549,635Aug. 11, 1925P.F. VokalThread Gaugemicrometers
1,560,697Nov. 10, 1925C. KnowlesDressing Attachment for Veritcal Surface Grindersgrinder dressers
1,582,669Apr. 27, 1926H.E. DurkeeScrew Thread Cutting Means for Bench Lathesscrewcutting lathes
1,586,186May 25, 1926A.W. ErdmanMilling Hobmilling machine cutters
1,588,003Jun. 08, 1926B.H. BloodThread-hobbing machinethread hobbing and thread milling machines
1,594,393Aug. 03, 1926P.F. VokalGrinding Wheel Dressing Attachmentgrinder dressers
1,611,048Dec. 14, 1926C. KnowlesBack Rest for Cylindrical Grinderscylindrical grinders
1,616,136Feb. 01, 1927E.A. MoyerTailstock Clampmetal lathe accessories and attachments
1,626,953May 03, 1927F. MüllerTool Postlathe tool holders and tool posts
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