Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7591112 | Compact roof-covering system A covering system for roofs and for the outside of building walls is provided in which, on top, a high range of various decorative materials and elements can be fixed without penetrating the watertight layer. The system contains protruding elements connected to the ... | 09/22/2009 |
| 7424793 | Interlocking curtain wall insulation system The interlocking curtain wall insulation system comprises a frame connected to a building structure having at least first and second parallel transoms, at least first and second parallel mullions, the at least first and second parallel transoms operably engaging the... | 09/16/2008 |
| 7380380 | Thermal protection device The invention provides a thermal protection device for mounting on the wall of a structure to be protected, the device comprising a panel suitable for receiving high temperature heat flux on its outside face. The panel is held at a determined distance from the wall ... | 06/03/2008 |
| 7024832 | Thermal insulation structure of housing and heat shielding member used for same The invention is intended to reduce heat accumulation in the heat insulator provided around the periphery of the living room of a house structure, thereby achieving simplification of a construction work, energy-saving, and rationalization in maintaining the living e... | 04/11/2006 |
| 6701676 | Attic access apparatus An attic access apparatus has a housing with a passage open to the attic and a door located in the passage for closing the passage. Insulating material in the passage above the door limits heat loss and air flow through the passage.... | 03/09/2004 |
| 6594957 | Insulated greenhouse A greenhouse includes a frame structure (1), an outer transparent covering layer (2), and a transparent inner layer (7). A transparent insulating sheet-like material is located between the inner and outer layers in close proximity to the inner layer (8). ... | 07/22/2003 |
| 6557313 | Blanket insulation with reflective sheet and air space Heat insulated wall structure includes interior blanket insulation positioned between adjacent ones of studs, interior of the exterior wall board. Reflective sheet material is placed adjacent the blanket insulation, and the interior wall board is applied ... | 05/06/2003 |
| 6164030 | Fixed vacuum insulation panel An apparatus is described which consists of a rigid plate and a vacuum insulation panel, in which the vacuum insulation panel is fixed to the rigid plate by a polyurethane foam applied as a liquid reaction mixture, wherein the vacuum insulation panel cont... | 12/26/2000 |
| 6014841 | Insulated cover for attic openings A cover apparatus (10) is provided which is easily and quickly installed, is simple to use, and is cost effective for selective closing of an attic opening (14) and for providing a thermal and dust barrier. The cover apparatus (10) preferably includes str... | 01/18/2000 |
| 5657602 | Exterior wall system and method of constructing same An exterior wall system for a side of a building includes a plurality of prefabricated composite panels which are positioned in courses above an elongated support bracket attached to a support structure of the building, the composite panels being connecte... | 08/19/1997 |
| 5007226 | Insulated refrigerator door construction An insulated refrigerator door designed and arranged to enable a flow path for air from the interior of the refrigerator through the door insulation includes an outer door panel of a generally rectangular shape having a surrounding peripheral frame so as ... | 04/16/1991 |
| 4944126 | Attic insulating system A system for insulating attics wherein access to the attic is had through an opening defined in the floor of the attic, the opening being normally closed by a trap door, comprising an expandable guard for providing lateral support to insulation adjacent t... | 07/31/1990 |
| 4525969 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 07/02/1985 |
| 4495742 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 01/29/1985 |
| 4454697 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 06/19/1984 |
| 4432180 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber of interior under negative pressure (vacuum) and being of... | 02/21/1984 |
| 4426819 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 01/24/1984 |
| 4423579 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 01/03/1984 |
| 4423580 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 01/03/1984 |
| 4422273 | Thermal insulating system particularly adapted for building construction The disclosure relates to a system for insulating building walls, ceilings, floors or like structure in which a hollow insulating panel is defined by an interior chamber under negative pressure, the insulating panel being supported along limited exterior ... | 12/27/1983 |
| 4377927 | Prefabricated thermal insulating system for buildings This disclosure relates to a prefabricated insulating system for buildings including a plurality of hollow insulating inner panels each defining an interior chamber under negative pressure, the latter panels being of a predetermined external peripheral si... | 03/29/1983 |
| 4334395 | Thermal insulating system particularly adapted for building construction This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of... | 06/15/1982 |
