WAESCHLE MASCHINENFABRIK GMBH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4952100 Pipe switch for plants for pneumatically conveying bulk materialExpiredMay 17, 89Aug 28, 90[B65G]
4946078 Apparatus for feeding bulk materialExpiredDec 06, 88Aug 07, 90[B65G]
4909273 Two-way pipe switchExpiredApr 13, 89Mar 20, 90[F16K]
4756624 Circulation mixer for bulk materialExpiredJun 17, 87Jul 12, 88[B01F]
4715951 Apparatus for separating granulate materialExpiredOct 21, 86Dec 29, 87[B07B]
4528092 Air classifierExpiredFeb 01, 83Jul 09, 85[B07B]
4461451 Slide valve for container of bulk materialExpiredDec 22, 81Jul 24, 84[F16K]
4412748 Gravity circulation mixerExpiredJul 24, 81Nov 01, 83[B01F]
4389949 Method of and arrangement for supplying a fuel to a plurality of burners of a furnaceExpiredOct 28, 81Jun 28, 83[F23K]
4301880 Device for pneumatic charging container-type balanceExpiredDec 18, 79Nov 24, 81[G01G, B65B]
4194845 Method and apparatus for mixing loose materialExpiredSep 22, 78Mar 25, 80[B01F]

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