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| Number | Title | Issue Date |
| 4120024 | Lighting installation A lighting installation for interior lighting of structures with pneumatic supporting members, comprising a hollow slotted light guide in the form of a supporting and shaping element of the structure. The hollow slotted light guide is of elastic film with... | 10/10/1978 |
| 4106851 | Film examining with diffuse and specular illumination A compact stereo light table includes a pair of high intensity spot sources on a diffusely illuminated background that are selectively diffuse or specular. There are controls for spot brightness, diameter and positioning and specular to diffuse adjustment... | 08/15/1978 |
| 4104710 | Patient headwall unit A patient room headwall unit consisting of an integral module for suspension on the headwall of a hospital room between two patient beds. The unit, which is prewired during assembly at the factory, includes a center section having provisions for gas, comm... | 08/01/1978 |
| 4097917 | Rotatable light display A light display which rotates in response to command signals in the form of sounds, light beams or the like. The display includes a tube having flexible rod-like members coupled thereto and extending outwardly therefrom with the outer ends of the members ... | 06/27/1978 |
| 4020337 | Ornamental bubble lamp An ornamental lamp employs one or more upward extending transparent tubes containing an electrically non-conductive liquid under a partial vacuum. A heater at the lower end of each tube causes bubbles to form and to pass through a restriction and to ascen... | 04/26/1977 |
