Display Devices was founded in 1989 and designs and manufactures A/V support products, includeing lifts, mounts, enclosures and stands for video projectors, HDTVs and other display devices for commercial and consumer use.
Notable Display Devices products include:
Display Devices Flex-Mount Universal Projector mount
Display Devices PFW Series wall mounts
Display Devices PT-C55 pan/tilt controller
A company similar to Display Devices would be Omnimount.