Concrete material paving stone
Patent 6015243 Issued on January 18, 2000. Estimated Expiration Date: 
September 8, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 8, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re3208 Curved like paving stone element for use in setting a curved paving Tile for an entrance mat Interconnecting paving stones Paving stone with lateral spacers Patent #: 5503498 InventorApplicationNo. 142436 filed on 09/08/1998US Classes:404/38, Integral404/34, Modules or blocks (preformed)404/37, Including spacer means404/41InterfittingExaminersPrimary: Will, Thomas B.Assistant: Addie, Raymond W Attorney, Agent or FirmForeign Patent References
International ClassE01C 005/06AbstractA paving stone, made from concrete material, having a one-piece plane surface and two strip like support attachments arranged on each lateral surface. These support attachments form joints between adjacent paving stones in a laid composite structure. On each side, two support attachments are symmetrically arranged with center spacings relative to the planes of symmetry, wherein these planes of symmetry extend through the centers of adjacent lateral surfaces. When these paving stones are stacked next to each other, the support attachments from a first paving stone is disposed adjacent to a support attachment on an adjacent paving stone. | |
