I want to know the answer to the following question:
A patent issue much later than normally expected can be referred to as what?
All the background I'm provided with is that "An exception is the United States, where patents filed prior to 8 June 1995 expire 17 years after the publication date of the patent, but application extensions make it possible for a patent to issue much later than normally expected (see submarine patents).". Is that enough to answer the question?