Talk:HearFones

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia

Patent expired?[edit]

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]