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Priority to ES1978235502UpriorityCriticalpatent/ES235502Y/es
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ES1978235502U1978-04-201978-04-20Dispositivo perfeccionado para limpieza y recuperacion de gas carbonico en tanques de fermentacion de cerveza.
ExpiredES235502Y
(es)
Ammonia gas collection apparatus and ammonia gas collection and absorption apparatus for use in connection with an ammonia gas diazo reproduction machine and ammonia gas absoption means for such collection and absorption apparatus
Fremgangsmaate til aa fjerne gass- og vaeskeholdige forurensninger som er innesluttet i kornene i kvartssand, og kvartssand med etsede kapillarspalter i kornene