Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 4108311 | Safety warning kit A highway safety warning kit having a portable all inclusive container, a display pole fitted thereto and a plurality of displayable safety warning signs.... | 08/22/1978 |
| 4106879 | Knockover roadway marker post A knockover roadway marker post has a base fixable to the ground by means of a stake or the like and having a flat upper surface provided with an upwardly tapering prismatic formation with a non-regular polygonal cross-section at its base. An upright post... | 08/15/1978 |
| 4103445 | Roll-up sign A portable sign assembly comprising a rigid knockdown frame and a flexible display web. In a collapsed condition elements of the sign assembly afford a relatively small package size which is conveniently handled and economically shipped. The sign is quick... | 08/01/1978 |
| 4085762 | Folding, rigid, tent-like structure A folding, rigid tent-like structure useful for a variety of play purposes can be constructed so as to utilize a pair of sides. These sides have top edges which are preferably connected by a connector and appropriate hinges so that the sides may be pivote... | 04/25/1978 |
| 4081119 | Carrying case A carrying case for transporting an article in an upright condition is described including a deep box having a front wall, a rear wall, a pair of side walls, a bottom, and defining an upwardly opening chamber therein. Advantageously, the case includes a l... | 03/28/1978 |
| 4077144 | Trailer warning panel assembly A warning panel trailer in which the warning panel, with the plurality of discrete electrical image display means, is raised to various operative positions along a column support and lowered to an inoperative position in an elongated seat on top of a plat... | 03/07/1978 |
| 4074451 | Display device A point-of-purchase display device having order blanks detachably supported thereon. The order blanks are provided with printed indicia which enable a purchaser to order an article, or articles, supported on the device in accordance with specifications wh... | 02/21/1978 |
| 4071969 | Collapsible display elements Display elements are used to convey a distinct and demonstrative impression of an article and/or an advertising offer. Thus, this element serves for advertising purposes and must have a correspondingly attractive appearance. However, for convenient storag... | 02/07/1978 |
| 4071970 | Hinge plate for roadside post safety breakaway system for sign panels and the like An integral hinge is described which is adapted to be used in conjunction with a roadside post safety breakaway system for sign panels and the like. The integral hinge plate is generally rectangular in configuration and planar and is provided with a notch... | 02/07/1978 |
| 4068398 | Knockdown sign assembly A knockdown advertising and display sign comprising a single setscrew for retaining a lockup cap which "buttons-up" the final assembly of the sign for simplifying set-ups and change of display panels and lowering manufacturing costs and for improving stab... | 01/17/1978 |
| 4059915 | Sign assembly A sign assembly comprising a sign standard which can be mounted into the ground for integrally supporting thereon a sign which can be rotated into a compact shape when not in use. One embodiment includes the sign being formed of interconnected, hinged sec... | 11/29/1977 |
| 4038769 | Portable sign holder A portable sign holder including a generally upright sign support and a collapsible base to which the sign support is connected. The base includes a pair of elongate leg members pivotally mounted for swinging about horizontal axes between support position... | 08/02/1977 |
| 4005537 | Fold-a-board A framework that is readily foldable so that it can be stored in a minimum space and which is adaptable for various different uses such as a barricade or for displaying a sign; the device consisting of a saw-horse-like structure upon which there is surmou... | 02/01/1977 |
| 4001987 | Screen constructions A screen construction applicable to exhibition and display purposes but also applicable to booths for attendants or projection equipment, room dividers or toy building kits comprises a plurality of support members of elongate form and uniform circular cro... | 01/11/1977 |
| 3979846 | Poster supporting device A device for use in maintaining that portion of a poster between upper and lower edge portions thereof in a flat configuration. First and second rigid frame piece assemblies removably engage upper and lower horizontal edge portions of the poster and are d... | 09/14/1976 |
| 3980267 | Collapsible easel module A collapsible easel module adapted to support flip-chart pads or other material to be displayed, the module having a frame constituted by a front element adjustably coupled to a rear element to assume a caret-like formation. The front element is formed by... | 09/14/1976 |
| 3971331 | Plastic barricade panel A movable barricade for use at construction sites having supporting legs connected by rails and further having at least one of its rails formed by a panel of thermoplastic material having a flame-oxidized forward surface to which pressure sensitive adhesi... | 07/27/1976 |
| 3938465 | Signal device A signal device combining a fluorescent or phosphorescent light tube and a slip on holder and which is designed to be thrown or dropped from a vehicle as a warning marker. The light tube is preferably of the chemically actuated type and the holder prefera... | 02/17/1976 |
| 3938772 | Folding display easel Folding display easel for supporting documents for easy viewing. Easel has a center panel with upper and lower flanges, two inner panels slidingly engaging the flanges, and two outer panels hinged to outer edges of respective inner panels. Inner panels en... | 02/17/1976 |
