...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 |
| 7213408 | Multifunctional constant temperature refrigerator with thermal carriers The present invention discloses a multifunctional constant temperature refrigerator comprising a compressor (1), an evaporator (16), a condenser (23), a cabinet (37), and freezing compartments (9), wherein the refrigerator further ... | 05/08/2007 |
| 7007809 | System for supporting a backplane between card cages A card cage includes first and second card cage walls; a first, upper pair of members, comprising a front and a rear member, supported between the first and second card cage walls; a second, lower pair of members, comprising a front and a rear member, supported betw... | 03/07/2006 |
| 6568773 | Refrigerator Refrigerator including a cold air duct fitted in a space stuffed with an insulating material between an inner case and an outer case of the refrigerator having a triangular section in a part facing the inner case for preventing deformation of the inner ca... | 05/27/2003 |
| 6335074 | Low warpage insulated panel design A thermal insulation panel exhibits little or no warping due to temperature differences between different portions of the panel. The panel comprises insulation material and an envelope for encapsulating the insulation material. The envelope comprises a ba... | 01/01/2002 |
| 6257684 | Heat insulation wall A heat insulation wall has two outer surface layers disposed at a distance from one another; the outer surface layers have a contour and are at least substantially vacuum-tight. The heat insulation wall has a connecting profile which extends along the con... | 07/10/2001 |
| 5876104 | Breaker assembly for refrigerated cabinet An inner liner is installed in an outer shell. A breaker panel assembly has four panels and four corners that form a rectangle. The assembly closes an insulation space around the front door opening between the liner and shell. Retainers on the panels enga... | 03/02/1999 |
| 5588731 | Refrigerator door construction An insulated door for a refrigerator or other appliance having an external panel of an open box configuration without integrally molded inwardly directed flange portions, a plurality of separately installed trim pieces arranged around an edge perimeter of... | 12/31/1996 |
| 5486407 | High rubber backing multi-layer ABS system which exhibits improved chemical resistance to HCFC blowing agents Multilayer sheets of an acrylonitrile-butadiene-styrene resin layer and a relatively high rubber acrylonitrile-butadiene-styrene resin layer are provided which are thermoformable. The multilayer sheets exhibit resistance to halogenated blowing agents whic... | 01/23/1996 |
| 5338601 | Polyolefin barrier films for preventing solvent attack on plastic resins This invention relates to the use of a barrier film, being a thermoplastic linear polyolefin resin, to protect a styrenic resin sheet which constitutes the inner liner wall of an insulative cabinet wall of, for example, a refrigeration appliance unit from... | 08/16/1994 |
| 5306082 | Appliance doors and panels An appliance door particularly suited for use as a refrigerator or freezer door includes a hollow, blow molded door slab, and a food storage shell or casing projecting from one wall of the slab. The parts forming the shell are prepared in a first step, e.... | 04/26/1994 |
| 5269601 | Method and apparatus for maunfacture of plastic refrigerator liners Plaques are formed on the sidewalls of the liner in a refrigerator to reduce thermally induced bowing of the cabinet. The plaques may consist of indentations in the liner, which in a preferred form are rectangular, or arrays of multiplanar indentations. T... | 12/14/1993 |
| 5033182 | Method of making a refrigerator cabinet A typical plastic liner refrigerator includes an outer shell of sheet metal, an inner liner of plastic and polyurethane insulation foamed in place between the inner liner and the outer shell. In order to counter stresses which can cause large unsightly cr... | 07/23/1991 |
| 4527844 | Thermally insulated chamber Novel construction is disclosed for a thermally insulated chamber for batch treatment of materials therein at low temperature wherein frequent opening and closing of the outer door of the chamber is practiced. The chamber walls as well as the insulated ou... | 07/09/1985 |
| 4498713 | Thermal stress relief in refrigerators A refrigeration apparatus having a plastic cabinet liner defining a refrigerated space and including a generally planar wall is located within a cabinet and spaced therefrom to receive foamed-in-place insulation. The planar wall of the liner has a first s... | 02/12/1985 |
| 4195888 | Mounting socket A mounting socket is installed within a refrigerator which has a thin inner liner wall and an outer cabinet with an insulation space therebetween. The socket is capable of receiving a horizontally extending mounting bracket associated with an internal she... | 04/01/1980 |
| 4009917 | Compression stressed liner for refrigeration equipment and method of making same A compression stressed liner for refrigeration equipment and a method of stressing the same is disclosed. The effective life span of refrigeration equipment liners can be significantly increased by compression stressing. Stressing liners in compression be... | 03/01/1977 |
| 3960631 | Method of making a liner construction A refrigeration appliance liner and method of fabricating the same. The liner includes a plastic wall provided with a release layer on one surface formed of a material having a limited adhesion with an insulating foam which is subsequently foamed-in-place... | 06/01/1976 |
| 3940195 | Refrigeration cabinet A freezer or refrigerator cabinet having an outer shell for strength and rigidity, a relatively thin plastic liner spaced from the shell to provide an insulating space therebetween with the liner having a projecting portion extending into the insulation s... | 02/24/1976 |