Talk:HearFones

Latest comment: 4 years ago by Georglink in topic Patent expired?

Patent expired?

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The patent linked in the article was filed March 5, 1998, more than 20 years ago. Has the patent expired? Should the article be updated to reflect that it was a previously patented technology?

Georglink (talk) 17:39, 2 April 2020 (UTC)Reply