For each brand emblem we store the years during which it was used at a publisher. In most cases this corresponds to the years of the brand emblem.
In some cases a brand emblem was used several times with long breaks in between. To avoid showing the brand emblem in the years in between in the brand drop down of an issue (with the potential of wrong data entry) we add a brand use for each separate case.
Some brand emblems were used at publishers different from the one of their brand group, this includes crossovers and, much more common, foreign reprints. Here we also add a brand use for the brand emblem at the other publisher, so that we can track the usage of the emblem.
Example, the [DC [bullet] brand emblem was used twice at DC and at several other publishers.