Complex sentence: They were granted Canadian and U.S. in 1885 and 1886 respectively patents for the Graphophone, which was originally intended for business use as a dictation recording and playback machine.
Split into simpler sentences: They were granted Canadian and U.S. patents for the Graphophone in 1885 and 1886 respectively. The Graphophone was originally intended for business use as a dictation recording and playback machine.