REMOVE

1. The technique patented in 18 …
2. active by 1849

WHAT

1. Decorative Arts and Utili … (1)
2. Silvered glass, engraved (1)

WHO

1. E. Varnish & Co. (1)
2. James Powell & Sons (1)
3. The Victoria and Albert M … (1)

WHEN

1. 1834 - 1973 (1)
2. The technique patented in … (1)
3. active by 1849 (1)