Retaining wall block

Details Retaining wall block Retaining wall block

1992-10-05

1994-01-18

Word, A. Hugo

Building units and construction elements

Architectural stock material

Construction block or brick type

Patent

active

D03434613

REFERENCES:
patent: D203590 (1966-02-01), Davis
patent: D250484 (1978-12-01), Mose
patent: 3418774 (1968-12-01), Kocher et al.
patent: 3998022 (1976-12-01), Mose
patent: 4123881 (1978-11-01), Mose
patent: 4229123 (1980-10-01), Heinzmann
patent: 4794749 (1989-01-01), Marcel
"Light in the Hand . . . Heavy in the Wall" Brochure, 2 pages, by Stonewall Retaining Wall Systems and Westblock Products, Inc. 1991.
"PISA II Interlocking Retaining Wall System" Brochure, 2 Pages, by PISA II and RISI Stone Ltd. 1988.
"PISA II Interlocking Retaining Wall System for Garden Landscaping" Brochure, 2 Pages, by PISA II and RISI Stone Ltd. 1984, 1985.
"Interlocking Retaining Walls From RISI Stone" Brochure, 2 Pages, by Rothbury Investments Ltd. and RISI Stone Ltd. 1989.
"Garden Wall, Another Quality Product From Keystone Retaining Wall Systems" Brochure, 2 Pages, by Keystone Retaining Wall Systems .COPYRGT.1991.

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