Edging resistant system for paving blocks
Patent 6030144 Issued on February 29, 2000. Estimated Expiration Date: 
January 14, 2017. 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.
January 14, 2017. 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 3724128 Landscaping bed divider Landscape edging apparatus and method Restraint edge for paving members Industrial restraint edging system for segmented paving units Landscape edgings with stakeable connectors Landscape edging apparatus and method Landscape border divider Patent #: 5640801 InventorApplicationNo. 782167 filed on 01/14/1997US Classes:404/7, Curb47/33, ORNAMENTAL BEDS52/102EARTH-SUPPORTED COPING OR EDGINGExaminersPrimary: Lisehora, James A.Attorney, Agent or FirmInternational ClassesA01G 001/08E01C 011/22 AbstractA restraint edging system for a segmented paving surface, including a vertical strip component for surrounding the boundary of the segmented paved surface, and a support member component. The vertical strip component has one or more parallel protruding ribs running the length of the vertical strip component which mate to recesses in the support component. The support component also serves to connect vertical strip portions.Other References
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