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US Patent 6168347 - Set of paving stones
US Patent Issued on January 2, 2001
Estimated Patent Expiration Date:
March 1, 2019Estimated 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.
Estimated Patent Expiration Date:
March 1, 2019Estimated 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.AbstractA set of paving blocks wherein each block is a prism having side and end walls that are irregular in outline but are contained only within a respective virtual rectangular perimeter. The rectangular perimeter has a length L in a X axis and a width W in a Y axis at right angle to the X axis. At least two spaced apart parallel sections of the prism extend between the side walls, parallel to the Y axis and terminate at the virtual rectangular perimeter, such that each section has a width equal to W and the prism has at least one section bisecting the virtual rectangle parallel to the X axis and terminating at a rectangular perimeter and having a length equal to L. | InventorsAssigneeApplicationNo. 259674 filed on 03/01/1999US Classes:404/34, Modules or blocks (preformed)404/42PatternedField of Search404/34, Modules or blocks (preformed)404/39, Bevel or incline edge404/41, Interfitting404/42, PatternedD25/113, Construction block or brick type (20)D25/118, Rectangular or square detailD25/151Brick or stone (26)ExaminersPrimary: Lillis, Eileen D.Assistant: Hartmann, Gary S. Attorney, Agent or FirmUS Patent ReferencesD159255, 708470, 847471, 889692, 2323848, 5533827Paving stone construction setIssued on: 07/09/1996 Inventor: Scheiwiller Foreign Patent References
International ClassC01C 005/06Foreign Application Priority Data1998-02-27 CA |
