Pfaff Industriemaschinen GmbH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6354233 Sewing or embroidery machineExpiredOct 13, 00Mar 12, 02[D05B]
5299518 Lower feed dog lifting, lowering, and horizontal couplingExpiredJan 02, 91Apr 05, 94[D05B]
5237941 Embroidery hoop with an outer contour deviating from the circular shapeExpiredJan 29, 91Aug 24, 93[D05C]
5199365 Sewing machine thread monitoring systemExpiredJan 09, 91Apr 06, 93[D05B]
5129171 Inflatable or twistable tubes for embroidery hoop fabric tensioningExpiredDec 17, 90Jul 14, 92[D05C]
5124606 Dual rotor with continuous/positioning reverse controlsExpiredMay 31, 90Jun 23, 92[H02K, D05B, H02P]
5120952 Device for detecting and counting warp and weft threads in a feed device of an industrial sewing machineExpiredJun 28, 90Jun 09, 92[H01J]
5113774 Thread cutting device on a sewing machineExpiredMay 31, 90May 19, 92[D05B]
5113324 Sewing machine with a lampExpiredDec 19, 90May 12, 92[D05B]
5105751 Process for carrying out a sewing operation with a sewing machine with needle feedExpiredMay 04, 90Apr 21, 92[D05B]
5103749 Process and sewing machine for sewing together layers of fabric according to a patternExpiredFeb 13, 91Apr 14, 92[D05B]
5095834 Sewing machine with swingable stitch forming unitExpiredNov 19, 90Mar 17, 92[D05B]
5091038 Plastic welding machine for producing weld seamsExpiredJun 05, 90Feb 25, 92[B32B]
5078068 Process and apparatus for preparing a seamExpiredJan 03, 91Jan 07, 92[D05B]
5036780 Feed device for a sewing machineExpiredMay 17, 90Aug 06, 91[D05B]
5027730 Sewing machine with a thread monitor for the thread of the bobbinExpiredNov 01, 89Jul 02, 91[D05B]
5018460 Embroidering machine with a mounting device for individual embroidery hoopsExpiredMar 02, 90May 28, 91[D05C]
5018465 Sewing machine with thread monitorExpiredApr 09, 90May 28, 91[D05B]
4996931 Sewing unit with a transport deviceExpiredJun 02, 89Mar 05, 91[D05B]
4974534 Double chain stitch sewing machine having a looper and a looper thread spreaderExpiredSep 29, 88Dec 04, 90[D05B]

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