Observable corner connection
Observation dome for buildings
Observation shelter
Observation tower
Octagonal shaped concrete block
Octet space frame structure and components for assembling such s
Octet structures using tension and compression
Off-ridge roof vent
Office floor system
Office forming equipment
Office furnishing unit framework
Office panel element configuration
Office panel partition and frame therefore
Office panel system incorporating improved locking and alignment
Office panel with lay-in communication cable capability
Office panel with top lay-in passageway
Office panelling system
Office panelling system with insert module
Office partition system
Office partition wall arrangement