Vacuum activated switch and container

Validity signal apparatus for monitoring a line boundary

Vandal-resistant call box

Variable alarm for communication devices

Variable candela strobe

Variable candela strobe with constant trigger voltage

Variable distance marker

Variable intensity visual signaling system

Variable low frequency offset, differential, ook, high-speed...

Variable power control for process control instruments

Variable pulse distribution electro-optical system

Variable resolution display

Vehicle communication system

Vehicle driver alertness apparatus monitoring steering wheel osc

Vehicle head-up display systems

Vehicle operator alert sensor and alarm

Vehicle proximity sensing and control system

Vehicular communication system using an ignition key

Vehicular emergency message system activation diagnostics record

Vehicular power line communication system