Rustproof Metal Window and Engineering Co
Rustproof Metal Window and Engineering Co Ltd. of Dava Works, Saltney, North Wales.
1934 Company founded.
1935 Public company.
c1940s The Allan Williams airfield defence turrets were produced by the Rustproof Metal Windows Co of Saltney, Chester in about 1940 and named after their managing director who was their co-designer.
1956 Name changed.
1961 Hot dip galvanizers and general engineers.
1964 Acquired by Bath and Portland Group