Retaining wall building block

Details Retaining wall building block Retaining wall building block

1992-09-30

1993-11-02

Word, A. Hugo

Building units and construction elements

Architectural stock material

Construction block or brick type

Patent

active

D03409961

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Seagren Industries, Inc., St. Louis, Mo., Loffelstein Retaining Walls, pp. 1-4 and insert , Circa. 1990.
Kiltie Corporation, North St. Paul Minn., Versa-Lok Retaining Wall Systems, Foldable insert, 1989.
Keystone Retaining Wall Systems, Inc., Minneapolis, Minn., Compac Unit, pp. 1 and 2, 1990.
Keystone Retaining Wall Systems, Inc., Minneapolis, Minn., Keystone Retaining Wall Systems, Foldable insert, 1991.
Allan Block Corporation, Bloomington, Minn., Allan Block Retaining Walls, pp. 1-4 and two inserts, 1990.
Stone Wall, Lanscape Retaining Wall System, pp. 1-4 and one insert, Circa. 1990.

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