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| Number | Title | Issue Date |
| 4205471 | Double faced sign with perimeter mounting flanges An illuminated display means is shown having, in combination, a support and a double faced sign frame. The structure includes a support having rigid arms for holding the sign frame in a generally vertical position for display of both of the faces thereof.... | 06/03/1980 |
| 4139957 | Low energy sign illumination system A low energy sign contruction is illustrated for illumination of signs of the type having translucent illuminated faces. An opaque sign border is bridged by a reflector extending generally parallel to the illuminated face and having a truncated sawtooth p... | 02/20/1979 |
| 4097632 | Product for constructing three-dimensional sign character A three-dimensional sign character is formed with improved circumscribing opaque metal sheet strip siding. The sign, typically having an interior light source, includes a translucent plastic face circumscribed by opaque sheet metal strip siding. The sheet... | 06/27/1978 |
| 4067128 | Taxi indicator An indicator for a taxi-cab, the indicator having a plurality of different displays to be shown through a window, there being control means in the vehicle to control which display is visible through the window.... | 01/10/1978 |
| 4052806 | Display device with adjustable attachment means A display device for displaying information bearing material having a side portion for supporting the material for viewing by the general public. The device includes an illuminating means located behind the side portion so that the information bearing mat... | 10/11/1977 |
| 4007552 | Extruded aluminum sign frame system A sign frame assembly is used for constructing peripheral display panel supporting frames for internally illuminated or other type signs. The system employs three basic extruded shapes -- a generally channel-shaped main frame member, a snap-fitting cover ... | 02/15/1977 |
| 3984069 | Visual runway indexing system Runway distances are disclosed on sides of translucent truncated pyramids mounted on spaced runway lights. The pyramids have flat tops and two translucent sloped sides with large numerals which face the runway at 120° angles. A rear face has a port with ... | 10/05/1976 |
| 3974584 | Light enclosure for suspended ceiling The lighted sign enclosure has a transparent, or translucent hollow body, reaching down from the ceiling, and inside the body a U-shaped fluorescent light tube, extending essentially as far down as the hollow body and back up. The body has a top rim, held... | 08/17/1976 |
| 3947986 | Advertising and emergency sign Advertising and emergency sign characterized by a supported sign that has exterior illumination for night viewing and includes a central framework and two facade sides disposed one on each side and being adapted, when released, to fall away from the centr... | 04/06/1976 |
