Asbestic Sand Brick Company, Bathgate, West Lothian
— 14/02/201821/09/1896 – Feodor Boas patent. Be it known that I, Feodor Boas, a subject of the Queen of Great Britain, residing at St. Hyacinthe, in the Province of Quebec, Dominion of Canada, have invented certain new and useful improvements in compounds of matter; and I do hereby declare the following to be a full, clear,…