Here are examples of probably over a thousand- compiled over the years. With headings and titles, I am not sure what is considered duplicate content.
I could go on , but you get the picture. Also, there are also some old pages that are showing up with content that was not part of the original, thus still being indexed because Google thinks it is an active page , like:http://ginelectronics.com/categories/receivers-amplifiers/microsmith-ir-booster-systems the page used to be for IR booster, which we no longer carry. Now instead of being inactive, it us showing amplifiers. There are quite a few like this also.
I wish there was a way to have Google do a re-index, but I have read all over and found nothing :(
Anyway, not sure if there is anything you can do on this, but they thanks for your time anyway...