The most frequent autonomic symptoms associated with multiple system atrophy are a sudden drop in blood pressure upon standing (orthostatic hypotension), urinary difficulties, and erectile dysfunction in men.
The IBM Selectric typewriter was a highly successful model line of electric typewriters introduced by IBM on 31 July 1961.
1 Pellegrine Tarri made an early typewriter that worked in 1801 and invented carbon paper in 1808. 2  In 1829, William Austin Burt invents the typographer, a predecessor to the typewriter. 3  Mark Twain enjoyed and made use of new inventions, he was the first author to submit a typewritten manuscript to his publisher.