O-ring seal for rock bit bearings

O-ring seal for rock bit bearings

O-ring seal with lubricant additives for rock bit bearings

Object bracket holder for concrete forms

Object manoeuvring apparatus

Object retainer for upright concrete construction forms

Object sensing apparatus

Object sensing apparatus

Object sensor system for automatic swing door

Object storage

Object supports

Oblique-displacement sliding door

Oblong-shape ventilator for mine drift

Obround window or door fitting

Observation platform and support

Obstacle detection device, in particular a frame for a...

Obstacle detector-responsive movable barrier operator...

Obstruction sensing edge for a bifolding door

Obstruction sensor for pneumatic door operator

Obtaining and evaluating downhole samples with a coring tool