Object positioning apparatus

Observation port or membrane to assist the proper...

Off-line switcher with battery reserve

Off-line switching mode power supply

Off-line switching power supply for generating negative...

Office wire manager

Offset keying technique for segregated phase comparison...

Offset pathway arrangements for energy conditioning

Oil compensation system for electric power cables...

Oil cooled generator

Oil cooled generator

Oil-cooled high-voltage generators with potential-...

Oil-filled cable system and joint for use therein

Oil-filled cable with dielectric of plastic-paper laminate

Oil-filled submergible electric pump motor with improved...

Oil-filled submergible electric pump motor with unvarnished...

Oil-tight selector switch

Oilwell casing electrical power pick-off points

Omni-wave dc/ac transformer: hysteresis loop free, variable,...

On-board electrical power generator operated by vibration or...