ABAR IPSEN INDUSTRIES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4770108 Two-way vent cap for controlled atmosphere furnaceExpiredJul 28, 87Sep 13, 88[F23N]
4688039 Heat-insulated telemetry system for vacuum furnaceExpiredOct 17, 85Aug 18, 87[G08C]
4412813 Rotary hearth furnace and method of loading and unloading the furnaceExpiredFeb 02, 82Nov 01, 83[F27B, F27D]
4403448 Apparatus for closing and sealing a doorwayExpiredDec 18, 81Sep 13, 83[E05D]

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