Series[UMA-SRE-20150084] Client legal documents of Blake & RiggallAccession[1962.0004] Records of Blake & RiggallIdentifierUMA-IT-000130980Scope and ContentLetters Patent for an improved automatic high pressure water filter to be entitled the 'Niagara Filter' taken out by William MACKENZIEAccess StatusAccess restrictions applyRequest TypeRequest unitUnit2015.0084 Unit 0219
Blake & Riggall, Mckenzie (31 December 1887), [UMA-IT-000130980]. University of Melbourne Archives, accessed 30/04/2026, https://archives.library.unimelb.edu.au/nodes/view/614667
