The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 1997
Filed:
Mar. 23, 1995
Angelo Risi, Richmond Hill, CA;
Antonio Risi, Richmond Hill, CA;
Rothbury Investments Ltd., Thornhill, CA;
Abstract
Retaining wall blocks are disclosed, which are trapezoidal in shape and have a positive interlock. These blocks can be used to construct walls, especially garden walls, that are strong and either straight or serpentine, with concave or convex surfaces. More particularly, the blocks, thanks to their structure, can be used to construct tree rings or wells, patio walls with or without corners, straight walls with curved ends, serpentine feature walls, L-shaped walls, lawn and driveway edgings, small steps, free-form shallow ponds, planter boxes, window wells and the like. Advantageously, they can be produced in the form of units comprising blocks of the same or different type, e.g. of the stacking, coping or corner type, which can be assembled in the form of very light bundles easy to store and transport.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile