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enMETHOD AND APPARATUS FOR MONITORING A SUPPLY OF GASfrPROCEDE ET DISPOSITIF SERVANT A CONTROLER UNE ALIMENTATION EN GAZdeVERFAHREN UND VORRICHTUNG ZUR ÜBERWACHUNG VON ABGEGEBENE GASENWIVENHOE TECHNOLOGY LIMITEDUniversity of Essex, Wivenhoe ParkColchester, Essex CO4 3SQGBREYNOLDS, Patrick, John27 Swains LaneFlackwell Heath Buckinghamshire HP10 9BNGBBARTINGTON, John, KeithFourways Bromley RoadFrating Colchester Essex CO7 7DPGBGillam, Francis Cyril, et alSANDERSON & CO. European Patent Attorneys 34, East Stockwell StreetColchester Essex CO1 1STGBATBECHDEDKESFRGBGRIEITLILUMCNLPTSEGB199200217019921125enWO199301142119930610199314