Raycon Textron Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4818834 Process for drilling chamfered holesExpiredMar 21, 88Apr 04, 89[B23K, B23H]
4791264 Low force wire guide for EDM machineExpiredApr 29, 87Dec 13, 88[B23H]
4786777 Process and apparatus for wire electrode trimming using a laserExpiredMar 21, 88Nov 22, 88[B23H]
4782203 Wire guide for electric discharge machineExpiredApr 16, 87Nov 01, 88[B23H]
4739145 System for positioning and transferring EDM electrodesExpiredApr 07, 86Apr 19, 88[B23Q, B23H]
4733048 Crash proof nozzleExpiredJul 17, 87Mar 22, 88[B23K]
4728773 Laser processing centerExpiredDec 08, 86Mar 01, 88[B23K]
4725705 Method and apparatus for electric discharge machining with adaptive feedback for dimensional controlExpiredSep 27, 85Feb 16, 88[B23H]
4703142 Method of combining grinding and EDM operation for finishing fuel injector nozzle bodiesExpiredMay 01, 86Oct 27, 87[B23H]
4670635 Multi-electrode electrical discharge machining apparatusExpiredAug 10, 84Jun 02, 87[B23H]
4644125 D.C. motor driven EDM headExpiredSep 23, 85Feb 17, 87[B23P]
4639568 Apparatus and method for finishing fuel injector spray tips using EDMExpiredJul 13, 84Jan 27, 87[B21K, F02M, B23H]
4463240 Electric discharge machine servo controlExpiredSep 01, 81Jul 31, 84[B23P]
4443681 Electric discharge machine automatic relay controlExpiredSep 01, 81Apr 17, 84[B23P]
4427871 Electric discharge machine current cutoff controlExpiredSep 01, 81Jan 24, 84[B23P]

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