Here's a mystery. I'll have to investigate when I have more time. The Watchtower Bible and Tract Society has received a letter patent from the Canadian Government. I wonder why?
Patent Letters Patent n. are letters open for public inspection written by or on behalf of the sovereign usually granting land or privilege to a person or area and have been in existence for at least 600 years. Patents conferring protection on inventions sprang out of these in the 16/17th Centuries. ( from Matt Stephenson)
Do a search for Watch Tower:
http://canadagazette.gc.ca/partI/2005/20050101/html/notice-e.html
Letter Patent 131498-7.