Improvement in apparatus for ventilating and destroying noxious vapours of drains and sewers, also hospitals and other buildings
By: [Alfred Young]
Contributors: Ayrton & Thomas
Publisher: Printed for Her Majesty's Stationery Office by Darling and Son, Ltd
Place of publication: London
Language: eng
Notes: Patent specification.

Contains both the provisional and the complete specification.

Patent reference : 1889/17898.