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BATTISTA OTTINO
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Publication of FR480061ApublicationCriticalpatent/FR480061A/en
E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
E04F17/00—Vertical ducts; Channels, e.g. for drainage
E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
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FR480061D1915-06-221915-10-22
Construction of walls joined together for insulation and for smoke channels
ExpiredFR480061A
(en)