Is there a way to save tomatoes, green on the vine, from a freeze?

I had a bumper crop of tomatoes this year.icon They were still putting on blossoms in late November. So I’m trying to save the dozens of green tomatoes still on the vine. They ripen so much slower in the Fall daylight and covering them at night won’t save them from a hard freeze.
December 6th - still hanging in there.
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