GULF & WESTERN INDUSTRIES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4441889 Coal-aqueous mixturesExpiredSep 10, 82Apr 10, 84[C10L]
4421214 System for automatically releasing parking brakesExpiredDec 16, 80Dec 20, 83[B60K]
4406664 Process for the enhanced separation of impurities from coal and coal products produced therefromExpiredMay 28, 81Sep 27, 83[C10M]
4406995 Base station for monitoring call boxesExpiredMay 12, 81Sep 27, 83[G08B]
4395290 Method of manufacturing cement raw mixExpiredJan 13, 82Jul 26, 83[C04B]
4377417 Titanium dioxide pigment treated to suppress yellowing in polymersExpiredDec 10, 81Mar 22, 83[C09C]
4305408 Automatic cigar wrapping deviceExpiredApr 14, 80Dec 15, 81[A24C]

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