ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,513,469, issued on Dec. 30, was assigned to Michel Oltramare (Crans-Pre-Celigny, Switzerland).
"Dual axial magnetic flux induction speaker" was invented by Hector Querry (La Neuveville, Switzerland), Guillaume Heisel (Bienne, Switzerland), Adrien Hoffet (Prilly, Switzerland), Jean-Luc Thuliez (Le Landeron, Switzerland), Etienne Crozier (La Neuveville, Switzerland) and Robin Zimmermann (La Neuveville, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the operating principle of a loudspeaker (20) with an induction motor (10). The motor (10) has two magnets (1a and 1b) positioned on either side of a central core (2...