Platt Saco Lowell Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5222350 Roving frame and methodExpiredDec 06, 90Jun 29, 93[D01H]
5202610 Method and apparatus for yarn end-down detection in a textile yarn winding machineExpiredAug 30, 91Apr 13, 93[B65H]
5168202 Microprocessor control of electric motorsExpiredAug 30, 91Dec 01, 92[H02P]
5161361 Motor-driven spindle assembly for ring spinningExpiredAug 30, 91Nov 10, 92[D01H]
5148070 Apparatus for commutation of an electric motorExpiredAug 30, 91Sep 15, 92[H02K]
4974296 Apparatus for correcting irregularities in a textile strandExpiredFeb 23, 90Dec 04, 90[D01H, G01D]
4961546 Strand tension compensatorExpiredSep 29, 89Oct 09, 90[B65H]
4799295 Drawbox air shut-off and method for doffing a textile comberExpiredJul 13, 87Jan 24, 89[B65H]
4735039 Ring rail suspension assemblyExpiredAug 06, 87Apr 05, 88[D01H]
4727626 Control of fibers in apron drafting systems of machinery used in the spinning processExpiredDec 16, 85Mar 01, 88[D01H]
4709452 Method and means of coiling start-up which prevents sliver slingoverExpiredJun 06, 85Dec 01, 87[B65H]
4535512 Method and means for providing assemblages of opened fibers for intimate blendsExpiredSep 26, 83Aug 20, 85[D01G]
4520530 Fiber feeding apparatus with a pivoted air exhaust wall portionExpiredSep 02, 83Jun 04, 85[D01G]
4480433 Rotor cleaningExpiredFeb 25, 83Nov 06, 84[D01H]
4467597 Method of spinning a yarn from two types of stable fibersExpiredJul 16, 82Aug 28, 84[D01H]
4448272 Method and apparatus for feeding, weighing and releasing fiberExpiredOct 09, 81May 15, 84[G01G]

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