ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,784,558, issued on Nov. 3, was assigned to M&R Technology Inc. (San Diego).

"Safety sensors" was invented by Magid Fazel (San Diego), Jerker Taudien (Shelburne, Vt.) and Milorad Mike Terzic (Carlsbad, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are garage door sensor systems and devices that include one or more transmitter sources configured to transmit an electromagnetic (EM) waveform and a plurality of receiver circuits configured to receive the electromagnetic waveform from a plurality of corresponding transmitter sources. Each of the plurality of receiver circuits and transmitter sources are configured to share a wired connection ...