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Originally Posted by svv1jww
still trying to find exact year model of tv.just trying to narrow it down.
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You probably know this, but patent dates are an imprecise way of dating an old TV or radio.
If you see a patent date (or number) on a label, that means the device could not have been made before the patent was granted. But it could have been made a considerable time
after that date, since patents, and licenses to use patented technology, remain in force for years.
Phil Nelson