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| Number | Title | Issue Date |
| 4289420 | Wooden mat A wooden mat assembly is disclosed for construction of temporary roadway surfacing, such as can be used to form a roadway or assembled to form a flat platform surface where wheeled or tracked vehicles can be turned around. The wooden mat assembly is forme... | 09/15/1981 |
| 4276728 | Dirt removing grid system for floors A floor grid is provided for a trafficway for removing debris from traffic passing thereover. The grid comprises a support structure below the surface of the trafficway, a plurality of spaced tread rails defining an upper surface which is generally flush ... | 07/07/1981 |
| 4262048 | Heel protector A protector member for placement on a vehicle floorboard protects the driver's heel from scuffing. The protector member has a pad with an upper convoluted surface. Relatively large peaks are surrounded by valleys. The peaks serve to remove debris, which i... | 04/14/1981 |
| 4068339 | Flexible matting A flexible matting for use at an entrance porch, corridor, veranda, pool-side, interior floor of automobiles, etc. This matting consists of a base on which tread bars and rows of ridges bearing piles are arranged in a definite direction with appropriate s... | 01/17/1978 |
| 4058956 | Vegetation clipping catcher A vegetation clipping catcher for receiving clippings is herein disclosed. Which vegetation clipping catcher includes a support rail and a plurality of rings slideably mounted on the support rail. A rib is respectively connected to each of the slideable r... | 11/22/1977 |
| 4050366 | Grating The present invention relates to an improved grating structure comprising carrying bars, and a plurality of ribs interlocked in said bars. Each of said ribs has holes strategically placed on their extremities such that a locking rod may be inserted throug... | 09/27/1977 |
| 3982977 | Dust collection mats A dust control mat having a pile fabric upper surface and a bottom calendered rubber stock sheet which employs an anti-tear strip located perpendicular to the grain or calendered direction of the rubber stock sheet between the rubber sheet and a latex bac... | 09/28/1976 |