Optical trailer hitch locator
Optical translator device
Optical user interface system for automotive modules
Optically transmissive armature for cursor control device
Optimized display device memory utilization
Optimum engine idling time indicator
Opto-mechanical cursor positioning device
Orientational mouse computer input system
Orthogonal active-passive array pair matrix display
Oscillating warning light for emergency vehicle
Oscilloscope
Out-of-range indication device for automatic diaphragm control
Output display apparatus
Output method and apparatus
Outside mirror communication system
Over-running indicator structure
Overcharge preventive device for automotive batteries
Overhead obstruction detector for a vehicle
Overhead obstruction sensing device
Overheight detector system for drive through restaurant