He had used Samuel Taylor 's system for seven years , but his symbols bear greater similarity to the older Byrom system .
Pitman was asked to create a shorthand system of his own in 1837 .
Pitman had used Samuel Taylor 's system for seven years , but Pitman 's symbols bear greater similarity to the older Byrom system .
Pitman was asked to create a shorthand system of his own in 1837 .