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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 6877288 | Waterproof-sheet type of roofing shingle A waterproof-sheet type of roofing shingle comprises a belt-like tape attached to a bottom side of the roofing shingle facing a concrete slab. The belt-like tape has air passages for reducing a pressure of steam or vapor generated from concrete. The air passages are... | 04/12/2005 |
| 6161353 | Backerboard for ceramic tiles and the like A rigid backerboard for replacement or substitution for a cementuous backerboard. The board is formed of a compression molded plastic material, preferably nylon which is relatively thin, yet rigid. The board is embossed on both of its principal (upper and... | 12/19/2000 |
| 6134856 | Roll roofing membrane An improved roll roof membrane for use in commercial applications, i.e., flat and low pitch roof structures, and a method for the preparation thereof. The roof membrane comprises a support sheet, and top and bottom layers comprising APP modified bitumen, ... | 10/24/2000 |
| 6026628 | Construction system for partition walls, walls and extradoses A system of construction based on the use of polystyrene boards for constructing partition walls as well as extradoses, these said boards being equipped with grooves for electrical and plumbing ducts, as well as for the formation of structural ribs, while... | 02/22/2000 |
| 5491946 | Wide decking structure The present invention pertains to a long-span decking panel. The long-span decking panel is used, for instance, to span the space between girders to create a roof or a composite floor. The panel has a flange member having a first edge and a second edge. T... | 02/20/1996 |
| 5299405 | Wall assembly A wall assembly used in the construction of passenger boarding bridges or other box type structures. The wall assembly includes an exterior panel with V-shaped folds or corrugations and a vertical flange on the end of each panel for attachment to adjacent... | 04/05/1994 |
| 5146721 | Wall panel with thermoacoustic insulation characteristics The panel with thermoacoustic insulation characteristics comprises an insulating layer made of foamed plastic material which has a succession of corrugated portions which are joined by reduced thickness portions. Metallic nets are associated with the oppo... | 09/15/1992 |
| 4811770 | Structural element for a building The structural element for a building comprises an insulating panel and a concrete rib plate. The concrete rib plate has a plurality of base members and rib members and is cast on the insulating panel used instead of a form. The rib members are fastened i... | 03/14/1989 |
| 4318258 | Thermal insulation for buildings When masonry or wooden walls are insulated with hard-foam-slab insulation covered with plaster or mortar, reinforcement of the plaster or mortar can be omitted without incurring cracking if (a) the slabs are grooved, (b) the size and number of slab groove... | 03/09/1982 |
| 4144369 | Composite deck panel A corrugated sheet for use as part of a composite concrete deck comprising parallel spaced crest surfaces connected to parallel spaced soffit surfaces by upstanding connecting web surfaces that converge towards each other as they approach a common crest s... | 03/13/1979 |
| 4080767 | Building wall with applied finishing surface design A building wall erected from blocks presenting one or more surfaces formed with a matrix of grooves generally horizontally and vertically related, and an overlay veneer or applied surface coating adapted to be impressed or indented with appropriate tools ... | 03/28/1978 |
| 4067164 | Composite panels for building constructions The invention relates to composite panels for building constructions and more particularly to panels comprising a main body portion of a closed cell generally smooth skinned foam material having along at least one surface thereof a protective cementitious... | 01/10/1978 |
| 4044520 | Building panel The panel includes a square base of expanded polystyrene, and has two projecting sides which mate with the undercut sides of two identical adjacent panels. All four sides of the base are bevelled slightly, and the front face defines intersecting grooves s... | 08/30/1977 |
