77912601
Jan 15, 2010
Mar 20, 2012
Audio electronic components, namely, sound masking equipment comprised of amplifiers, speakers, and masking sound generators, speech privacy equipment comprised of amplifiers, speakers and masking sound generators, and eavesdropping protection equipment comprised of electronic transceivers for blocking or inhibiting interrogation signals, acoustic baffles and damping materials, and white and pink noise generators
Electrical and Scientific Apparatus