Oil and gas well disaster valve control system
Oil well survey tool
Omnidirectional low noise piezoelectric transducer
Operation in very close coupling of an electromagnetic...
Optimized operation of a dense reader system
Oscillator tuning system and oscillator tuning method
Package location system
Pallet content identification mechanism that converts RFID...
Pallet content identification mechanism that converts RFID...
Pallet content identification mechanism that converts RFID...
Parallel operation of seismic vibrators without phase control
Parallel RFID system using CDMA
Partially filled fluid damped geophone
Passive communication device and passive access control system
Passive response communication system
Passive tag with variable output
Phase modulation in RF tag
Phase shifters, interrogators, methods of shifting a phase...
Phase shifters, interrogators, methods of shifting a phase...
Pilot operated mud-pulse valve