Modular Engineering

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5224560 Modular drill bitExpiredMay 18, 92Jul 06, 93[E21B]
5199516 Modular drill bitExpiredMay 18, 92Apr 06, 93[E21B]
5137097 Modular drill bitExpiredOct 30, 90Aug 11, 92[E21B]
4858783 DispensersExpiredMar 01, 88Aug 22, 89[B65H]
4503980 Device for stacking of articles of which the upper most article of the stack is maintained automatically at a certain levelExpiredOct 12, 82Mar 12, 85[A47F]

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