> A convenient way of providing the film over the coatings 11 and 12 and the electrode 13 is to spatter metallic copper by heating copper wire with in a vacuum,

> A convenient way of providing the film over the coatings 11 and 12 and the electrode 13 is to spatter metallic copper by heating copper wire with in a vacuum, or by depositing copper from a colloidal suspension, over the entire upper surface and then sulphurizing the deposited copper in sulphur vapor, or by exposure to a suitable gas as hydrogen sulphide or a liquid containing sulphur, as sulphur dissolved in carbon bisulfide. Nice use of the word "convenient" to mean "impossible to almost everyone, even 100 years in the future". Still, it's a lovely piece of writing compared to most modern patents I've seen.