Client: General Concrete Ltd
Product: Rapidex Roof and Floor Systems
Ad Agency: General Concrete Marketing
Location: Pittsburgh Pa

Rapidex was a registered trademark of General Concrete Ltd. The product comprised of a pre-cast concrete structural slab system of interlocking, steel-reinforced, hollow concrete units. The beams installed quickly due to the tongue and groove edges and hollow cores.
Not sure how well it worked, don't see much information on the unique system.