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Ultralinear patent

Posted by Ralph on September 14, 2023 at 14:00:22:
The ultra linear patent, assigned to Arco, disagrees with you. Link below

Other manufacturers, like Dynaco and Marantz, recognized the benefit, but not wanting to pay royalties, moved the taps slightly so as to get around the patent. In fact the entire industry did this and that practice is still around to this day, mostly out of tradition and ignorance of that went down; which is why you are presenting the info you have.