The history of Parker pens is also a lot of the history of pens in general, with innovations like the 'Lucky Curve' feed that made fountain pens more reliable and less likely to leak, and the Aerometric feed that first made fountain pens safe from the pressure changes in aircraft. The Parker 51 was a huge success, and introduced the world to the 'ink collector', which kept a ready supply of ink wrapped around the nib - relatives of the same system are in use today not only in fountain pens, but in many of the best rollerballs too.
