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Expired
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Alphonse De Man
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Individual
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Individual
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Publication of GB189804632ApublicationCriticalpatent/GB189804632A/en
4632. Man, A. de. Feb. 24. Bending. - Thin bars A for fireproof floors, ceilings, and slabs are twisted at intervals by placing them in slotted blocks or heads, and turning the parts between the blocks by a fork or wrench.
GB189804632D1898-02-241898-02-24Improvements in and relating to Fire Proof Buildings.
ExpiredGB189804632A
(en)