Fulcrum started as an electronics parts company called called W&W Component
Supply in San Jose, CA. In October 1979 they acquired part of the assets of
the then bankrupt IMSAI company and started selling IMSAI boards and
systems. They later changed the name to Fulcrum. There even was an European
(English)
division. They then started to acquire other non IMSAI S-100
boards from specialist/designers in the local area. One was their VIO video
board, but they were best known for their economical high capacity static
RAM boards. Fulcrum/W&W closed down in 1988. There is a more detailed
account of the relationship between IMSAI and Fulcrum described on Herb
Johnston's site see
here.