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| Number | Title | Issue Date |
| 4378401 | Manufacture of structural board panels A method of forming structural board panels from short strands of bagasse or other cellulistic material. The material resinated, compressed and cured to give an open structural block. A mortar screed of portland cement and sand is then applied to penetrat... | 03/29/1983 |
| 4370075 | Revetment grids and mats A cellular precast grid and mat for use as revetment. The grid, which may typically be cast of concrete, is substantially rectangular, having a flat bottom and, in its middle, two optional vertical openings of rectangular cross section with two inwardly s... | 01/25/1983 |
| 4340521 | Pressure compacting of settable plaster compositions A settable molding composition comprising a mix of synthetic plaster with an extraneous water source, including a "wet" synthetic gypsum or a mixture of same and free water, is readily pressure compacted or molded into a plurality of useful shaped article... | 07/20/1982 |
| 4272211 | Wear resistant slab A wear-resistant element, particularly in the form of a slab intended to be used as covering in areas exposed to excessive wear. The slab includes a hard wear metal of a hardness exceeding 400 Brinell, said wear-metal being in the form of granules which a... | 06/09/1981 |
| 4206577 | Refractory lining element for a furnace or the like The element includes lateral walls and a bottom. An inner gap is arranged to be filled with bulk fiber. The walls and the bottom are formed of fibers bonded together. The bottom has a projection arranged to be nested in the inner space of an adjacent elem... | 06/10/1980 |
| 4202646 | Helicopter landing platform A helicopter landing platform comprises a fine mesh grid supported on a coarse mesh grid above a horizontal surface such as an ordinary helicopter landing pad. The grid structure is supported in superposed spaced relationship by a supporting framework; an... | 05/13/1980 |
| 4183987 | Kerfed edge gypsum board having improved edge strength Disclosed is a gypsum board having a kerfed edge along substantially the full length of at least one edge wherein the kerf has sidewalls inclined opposingly inwardly toward one another but do not intersect and are joined by a bottom surface of uneven prof... | 01/15/1980 |
| 4183188 | Simulated brick panel, composition and method A simulated brick panel and the method of making it are disclosed. The panel has double expanded metal reinforcement and is very light in weight compared to similar articles of conventional brick and mortar construction. The panel is ductile and may be mo... | 01/15/1980 |
| 4134243 | Structural panels An improved structural panel, apparatus for producing the panel and method for producing the panel are disclosed. The improved panel structure is essentially a three dimensional panel structure having two essential planar face surfaces with a plurality of... | 01/16/1979 |
| 4086737 | Refractory fiber blanket module with heat shrinkage compensation A refractory fiber blanket furnace lining module with compensation for heat shrinkage, and method of assembly of such a module, are disclosed. In the module as assembled, the refractory fiber material is in compression in horizontal planes coplanar with t... | 05/02/1978 |
| 4069633 | Refractory wall structures A refractory furnace lining or like wall structure is built as a dry wall from unfired, relatively large and heavy, basically rectangular blocks fitted closely together and tied by refractory rod-like keys in opposed pairs of grooves in the blocks. A wall... | 01/24/1978 |
| 4055928 | Casing brick, and a method and apparatus for making the same A casing brick comprising a hollow insulating insert, and a two-part concrete shell which substantially encloses the insert, two projections extending from the insert and positioned between the two parts of the shell and interlocking projections and groov... | 11/01/1977 |
| 4031282 | Simulated traditional sand-finished masonry Simulated traditional colonial sand-finished masonry is provided having a unique appearance simulating that of sand-finished burned clayware. The decorative qualities are excellent and can be made similar to those of architectural terra cotta and other bu... | 06/21/1977 |
| 3965637 | Composite block for refractory linings of furnaces A refractory block particularly for lining furnaces intended for heating scrap or ore to be employed in steelmaking, comprises an envelope made of soft steel and a plate of stainless steel welded to the envelope and forming the block face directed towards... | 06/29/1976 |
| 3945747 | Edging guide An edging guide for use along a fence or building to provide a surface over which one wheel of a lawn mower may roll which guide is composed of a plurality of end-to-end abutting slabs having an upper surface which includes a first portion and an outwardl... | 03/23/1976 |
| 3943676 | Modular building wall unit and method for making such unit This modular building wall unit comprises a hard foam layer and a concrete layer intimately bonded to each other along an interface between the layers. A reinforcing wire mesh matt is embedded in the hard foam layer and reaches with anchoring elements int... | 03/16/1976 |
| 3942293 | Metal oxide coated refractory brick Refractory brick that is treated with refractory metal oxide powder, e.g., titanium oxide, is used as a reactor lining. Joints between a dry assembly of refractory brick are filled with refractory metal oxide powder.... | 03/09/1976 |
