Occupancy indication device and method

Occupancy marker

Ocean location marking using film forming polymers

Oil level detector

Oil level indicator

Oil level indicator for use with damping fluid metering pins

Oil spill prevention apparatus

Omnidirectional speed cockpit display

Omnidirectional wind indicator

On demand useful life indicator

On-demand useful life indicator and method of making same

On-vehicle display

One piece horn cover

One piece plastic molded structural unit and door knocker constr

One-way roadway marker

Open-closed indicator for a valve

Operation indicator

Opti-mechanical displacement microindicator

Optical device having light-mixing element

Optical display unit for pneumatic systems