Devices to lift invalid patients, namely, electric and non-electric lifts, trapeze bars and bases, and slings; mayo stands; hamper stands for medical refuse and linens; Manually-operated exercise equipment for physical therapy purposes, namely, overdoor exercise pulleys for therapeutic purposes; traction apparatus for medical use; cervical collars; I.V. poles for medical use; medical examination lamps; geriatric chairs in the nature of medical patient treatment chairs; hip chairs in the natur...