ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,210, issued on Sept. 9.

"Device for distance measurement and method for functionally checking a device for distance measurement" was invented by Olivier Dubray (Chatuzange-Le-Goubet, France) and Samuel Grosdidier (Beauregard-Baret, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for distance measurement includes a signal generator for generating a signal, a transmitting antenna for transmitting the signal, a receiving antenna for receiving a received signal, a first mixer, an evaluation unit, and a diagnostic unit having a diagnostic line. The first mixer mixes the signal and the received signal. The signal generator is connected to ...