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Incandescent light bulbs are officially banned in the U.S.
(www.digitaljournal.com)
This is a most excellent place for technology news and articles.
I live in the UK where they've been banned as part of the EU directive since 2016. What I can tell you is that you can still get incandescent light bulbs for an oven. I bought one probably a year ago for mine.
There is likely an exception in the law for this.