NISHIYODO AIR CONDITIONER CO., LTD.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5241829 Method of operating heat pumpExpiredMar 12, 92Sep 07, 93[F25B]
5005371 Adsorption thermal storage apparatus and adsorption thermal storage system including the sameExpiredMay 18, 90Apr 09, 91[F25B]
4352227 Apparatus for producing a finned tube for heat transferExpiredJul 14, 80Oct 05, 82[B21C]
4259771 Apparatus for producing heat transfer tubeExpiredMar 22, 79Apr 07, 81[B21F, B21C]

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