Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4547987 | Sign structure An intermediate frame for a sign box of the type having a first hinging member around its perimeter, and having an outer face frame for supporting a face panel, the intermediate frame having a generally rectangular construction with two ends, and a top an... | 10/22/1985 |
| 4542605 | Sign A sign has a rigid peripheral frame extending around an opening lying in a plane and a sheet of flexible sign material extending across the opening. The frame has a flange with a free end defining the periphery of the opening, the flange extending from th... | 09/24/1985 |
| 4516343 | Sign structure An intermediate frame construction for use in association with a sign box of the type having a box hinge recess around its perimeter and a front frame for supporting a face panel, the front frame having a front hinge, the intermediate frame comprising, a ... | 05/14/1985 |
| 4490934 | Rigid mechanical corner pocket for tensioning flexible signs and signal devices A signal device includes a frame supporting a flexible sheet having indicia on one face. A plurality of oppositely disposed retainers are fixed to the other face of the sheet. A portion of the frame extends into each retainer to rigidify the sheet. Each r... | 01/01/1985 |
| 4459773 | Tensioned mounting device for thin, planar artforms A tensioned mounting device is disclosed. The device is designed to apply a gentle tensioning force along the attached edges of a mounted thin, planar device, such as a poster. The device is comprised of two variable-length bar mechanisms. Each mechanism ... | 07/17/1984 |
| 4452000 | Illuminatable sign An illuminatable sign has a housing having an open front and containing a light source. A closure extending over the open front comprises a frame extending around an opening, a sheet of flexible light-transmitting material extending across and covering sa... | 06/05/1984 |
| 4441269 | Sign frame A sign structure of the type having a pluality of elongated sign frame elements defining a sign frame and a facing material covering at least one face of the sign frame. The improvement relates to an improved sign frame structure, an improved facing mater... | 04/10/1984 |
| 4430819 | Display sign assembly A lighted display sign having a main frame or cabinet for supporting a light source and one or more sign faces characterized by a decorated sheet of flexible translucent material such as that manufactured under the trademark PANAFLEX. The sign face is mou... | 02/14/1984 |
| 4426800 | Flexible sign with improved corner bracket A flexible message sign particularly intended for highway or roadway applications, and having improved corner brackets. Each corner bracket is made of rigid members which sandwich and securely engage corners of the flexible fabric or other material from w... | 01/24/1984 |
| 4393558 | Fastener for sheet material A fastener for a detachable mounting of flexible sheets, comprises a pair of molded members of synthetic resin which are detachably interconnectible to each other with the sheet gripped between them. One molded member is the base part and is adapted to be... | 07/19/1983 |
| 4372071 | Fabric faced billboard An advertising billboard is provided and various methods and means of its construction are described and claimed utilizing the basic concept of drawing a sheet of fabric having the advertising message on the front across the rigid billboard panel and then... | 02/08/1983 |
| 4317302 | Sign cabinet with box beam support frame and clamp assemblies This invention relates to on premise display sign cabinets having a main frame and a support frame formed by an extended box beam, the latter being rectangular in cross section, said support frame being disposed along the periphery of the main frame and b... | 03/02/1982 |
| 4301205 | Device for fastening objects on a flat support member A device for fastening an object to a flat support member is disclosed. The device includes an adhesive coating of at least 0.35 mm which is applied to the support member or the object. The coating may be provided on a table plate, a sideboard or tray as ... | 11/17/1981 |
| 4279087 | Box frame for fabric prints and the like A box frame for the display of fabric prints and the like, comprising a shallow, closed box formed from folded sheet material, with the fabric stretched over the front face of the box and stapled or otherwise secured to the rear surface. The rear of the b... | 07/21/1981 |
| 4268000 | Apparatus for fixing sheets on a base The specification describes a method and an arrangement for attaching flexible sheets on a base by means of holding means at the corners. One corner of the sheet is held stationarily, a second corner of the sheet is guided in one direction and in this dir... | 05/19/1981 |
| 4265039 | Display signs A fabric is stretched across a sign framework to serve as a display face. Forming the framework are upper, lower and respective side support elements. Depending upon the particular version, a hinge or saddle is affixed to one or more of the support elemen... | 05/05/1981 |
| 4233765 | Frame for securing flexible sheets of material A peripheral frame member holds flexible sheets of material tightly over a central open area. A channel around the back of the frame is adapted to receive a flexible strip member having a longitudinally extending bifurcated projection engageable within th... | 11/18/1980 |
| 4194312 | Needlepoint supporting frame and clip assembly A manually adjustable open four-sided frame and a number of improved clips that cooperate to provide an assembly that removably and frictionally engages a sheet of fabric on which needlepoint or other decoration is being defined to maintain a desired port... | 03/25/1980 |
| 4185408 | Back-lighted signboard Apparatus for mounting signboard paper in large sheets or in elongated strips, and for holding the signboard paper in tension over a slightly curved board transparent surface, and including moveable tensioning devices.... | 01/29/1980 |
| 4180934 | Perforated stencil sign panel A marquee false front consists of a sheet of pennant cloth of one color, e.g. yellow, of dimensions equal to those of the desired marquee false front. The front surface of the sheet, except for letters-defining areas, is coated with matter which inhibits ... | 01/01/1980 |
| 4176480 | Poster supporting frame A device for use in maintaining a poster or like sheet decorative material in a flat configuration by removably engaging narrow marginal edge portions thereof, and as a result no portion of the decorative insignia on the poster being concealed from view w... | 12/04/1979 |
| 4171585 | Roll display device A roll display device having a pair of roll mounting cylinders, an expandable frame rotatably mounting the cylinders at the ends of the frame and a base support for the frame. Each mounting cylinder has means for quickly clamping a roll end on it. Means a... | 10/23/1979 |
| 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 |
| 4095360 | Display device A display device comprises a rectangular transparent plastic envelope formed from two sheets of flexible plastic material which are seamed together adjacent their top, one side and bottom margins. The sheets also include horizontal enclosed sleeves at the... | 06/20/1978 |
| 4073082 | Truck bumper attachment A truck bumper attachment for use with wideload signs, having spring urged telescoping C-clamps for fastening onto the truck bumper and also telescoping supports for the sign so as to be useful with a plurality of sign sizes.... | 02/14/1978 |
| 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 |
| 4055910 | Picture frame A frame has channel members extending along each edge of the frame material with each channel member abutting another member at the corner of the framed material. A locking member is slidable between the frame material and the pairs of abutting channel me... | 11/01/1977 |
| 4041861 | Screen printing frame with floating stretch-clamps On each of its sides, the fabric or mesh of a printing screen is clamped by clamping means which can be drawn outwardly to stretch the fabric. So that the stretching of the fabric in one direction will not be hampered by the clamping means for the other d... | 08/16/1977 |
| 4021948 | Foldable warning device A rectangular or trapezoidal or triangular warning sign of flexible sheet has attached near its upper corners a resilient mounting string. Each lower corner portion of the sheet is connected to one end of a string which, at the other end, is provided with... | 05/10/1977 |
| 4019271 | Method for manufacturing a display portion thereof A portable sign, and method for manufacturing a display portion thereof, useful on highway construction projects for alerting motorists to road repairs, hazards, and the like, that is arranged to be easily erected or taken down, with component parts that ... | 04/26/1977 |
| 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 |
| 3949503 | Emergency warning device An emergency warning device for a motor vehicle is made up of a long, brightly colored plastic sheet with a warning message which is stored on a roller and adapted to be mounted on the inside surface of the trunk lid of the vehicle. In order to warn other... | 04/13/1976 |
| 3934365 | Sign frame A sign of the type generally intended for internal illumination having a sign frame, a flexible material covering at least one face of said sign frame, and means for supporting the flexible material over the face of the sign frame and for stretching and t... | 01/27/1976 |
