Improved method and means for preserving food and other substances, and for supplying sterilised air to rooms and other enclosed spaces / [Jean Effront].
- Effront, Jean.
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About this work
London : Printed for Her Majesty's Stationery Office by Darling and Son, Ltd, 1894.
4 pages, 1 folded leaf of plates : illustrations
Contains both the provisional and the complete specification
Patent reference : 1893/15757