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O GOEMINNE ETS
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F22B23/00—Water-tube boilers built-up from sets of spaced double-walled water tubes of return type in unilateral abutting connection with a boiler drum or with a header box, i.e. built-up from Field water tubes comprising an inner tube arranged within an outer unilaterally-closed tube
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FR763345D1932-12-161932-12-16Procédé et outillage pour la fermeture des tubes de chaudières à vapeur du type field et produit obtenu
ExpiredFR763345A
(fr)