85313518
May 5, 2011
Sep 11, 2012
Optical communication devices, namely, optical probes in the nature of optical sensors for data exchange between electric energy meters or gas meters, and other metering equipment, optical transmitters and optical receivers; intercommunication apparatus, namely, modem, sound amplifiers, and electrical outlet sockets; electric connectors and couplers; instrument transformers; electric signs
Electrical and Scientific Apparatus