Is there a way to produce a chart that displays different products (Y axis)
against the dates they were used (x-axis)? An example would be:

Product A used from 4-20-10 to 4-30-10
Product B used from 4-15-10 to 4-20-10
Product C used from 4-18-10 to 5-3-10

I want a chart with three parallel lines that only display segments that
correspond with the dates used.