Bituma-Stor, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4561821 Portable self-erecting surge storage siloExpiredDec 20, 84Dec 31, 85[B65G]
4465420 Self-erecting portable paving mix siloExpiredMar 03, 82Aug 14, 84[B60P]
4264213 Desegregation preventing means for asphalt mix storage apparatusExpiredJun 13, 79Apr 28, 81[B28C]
4261679 Clean-out for asphalt mix bucket elevatorExpiredJun 13, 79Apr 14, 81[B65G]
4249679 Sealing closure for asphalt mix storage bin outletExpiredFeb 05, 79Feb 10, 81[B67D]

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