HALO
communication equipment (namely, receivers, intercoms, public address systems comprised of microphones, intercoms, and speakers; and push-to-talk and vox switched units to interface with transceivers) [ and electronic personal alert safety devices and biorhythm monitors, ] for use with safety equipment such as self contained breathing apparatus used by rescue workers; namely, firefighters, mine workers, and the like
Registered · April 27, 1993 · 74296773 ·