Before revision: 1768.,p .68 We also know that George Richards Elkington (1801 – 1865), otherwise known for his patent for galvanic gilding and silver plating from 1840 patented at least one process of electrochemical coloring of metals (the American JE
After revision: 1768.,p .68 We also know that George Richards Elkington (1801 – 1865), otherwise known for his patent for galvanic gilding and silver plating from 1840 patented at least one process of electrochemical coloring of metals (the American J.E .