HERFELD UTE, HEIRESS UNDER THE LAST WILL TESTAMENT OF HERFELD FRIEDRICH W. A. DECEASED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4930897 MixerExpiredMar 02, 88Jun 05, 90[B29B, B01F]
4918665 Apparatus for mixing materialExpiredJan 27, 87Apr 17, 90[B01F]
4781468 Mixing apparatusExpiredNov 24, 86Nov 01, 88[B01F]
4676658 Mixing apparatusExpiredAug 26, 85Jun 30, 87[B01F]
4671666 Mixing deviceExpiredJul 12, 85Jun 09, 87[B01F]
4372686 Double-cone rotating mixerExpiredMay 20, 81Feb 08, 83[B01F]

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