
Davy automatic safety fire escape made by John Kerr and Co. (M/C) Ltd
Davy automatic safety fire escape made by John Kerr and Co. (M/C) Ltd, Fire Protection and Safety Engineers, Liverpool to patent no.284420 of 1928 by C.F. Davy
Davy automatic safety fire escape made by John Kerr and Co. (M/C) Ltd, Fire Protection and Safety Engineers, Liverpool to patent no.284420 of 1928 by C.F. Davy