Complex sentence: The U.S. Patent Office granted Flemming his patent (no.338,727) on March 30,1886; he would also acquire a Canadian patent (no.26,398) on April 5,1887.
Split into simpler sentences: The U.S. Patent Office granted Flemming a patent (no.338,727) on March 30,1886. He also received a Canadian patent (no.26,398) on April 5,1887.