Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7270497 | Paving element A cluster of paving elements is formed with a peripheral edge having a re-entrant formation formed between the upper supporting surface and the lower, supported surface. The formation engages a complimentary formation on an adjacent cluster to inhibit relative movem... | 09/18/2007 |
| D511012 | Paving stone | 10/25/2005 |
| D510443 | Paving block with ribs | 10/04/2005 |
| 6942420 | Ground covering elements of artificial stone material The invention relates to an artificial stone floor element with a basic shape that corresponds to the combination of a plurality of square basic elements, especially to an angular floor element. The floor element includes projections and recesses along its periphera... | 09/13/2005 |
| 6938382 | Stockade A palisade comprises visible or wall surfaces disposed on opposing sides and intermediate end faces. One of the end faces is provided with a projecting convex head, while the other end face comprises a correspondingly formed concave receptacle for the head. When for... | 09/06/2005 |
| 6857244 | Cast stone for fixing exterior traffic surfaces There has been disclosed a cast stone (1) for securing traffic areas outdoors, with the stone (1) bearing at least one pair consisting of a protrusion (9) and an adjacent recess (10) substantially matching the form of the protrusion of th... | 02/22/2005 |
| D498543 | Paving element | 11/16/2004 |
| 6790544 | Multiple layer composite material consisting of cement-bound concrete and polymer-bound concrete and method for producing the same The present invention relates to a multiple layer composite material and to a method for producing the same. Said multiple layer composite material has at least one layer of cement-bound concrete and at least one layer of polymer-bound concrete. The transition betwe... | 09/14/2004 |
| 6430886 | Building stone and masonry formed therefrom A building block for forming a masonry structure comprises at least two stone members disposed one above the other and connected firmly to each other, each of which having a wide section at one end and a narrow section at the opposite end. The sections ma... | 08/13/2002 |
| 5902069 | Artificial paving stone with identical spacer elements having a tooth and a tooth recess There is provided an artificial stone for strengthening traffic surfaces in the open, in which the stone, in order to provide wide grooves between adjacently laid stones, is provided on its edge surfaces with integrally formed, completely identical spacer... | 05/11/1999 |
| 5797698 | Paving elements for the water-permeable reinforcement of surfaces A paving element for the water-permeable reinforcement of surfaces, said paving element comprising a top surface, a bottom surface and a plurality of sides. One or more of the sides have vertical recesses extending from the top surface of the paving eleme... | 08/25/1998 |
