About 3 Trademarks found that are owned by Isemcon Llc

Acoustic measurement microphones and accessories therefor in the nature of outdoor protection housings in the nature of protective covers for microphones, windscreens, electric signal and power supply converters, cables, electrical adaptors for microphone to preamp interconnections, mechanical adaptors for connecting microphones to microphone brackets, and mounting brackets adapted for microphone stands; Sound Calibrators; Pre-amplifiers

Electric sensors; Electronic proximity sensors and switches; Leak detectors for liquids; Liquid level sensors; Proximity sensors

The mark consists of a stylized small "I" script into a capital letter "SEM" returning to small letters "CON", all in a dark gray color.