Retaining wall block

Details Retaining wall block Retaining wall block

1992-08-27

1993-12-21

Word, A. Hugo

Building units and construction elements

Architectural stock material

Construction block or brick type

Patent

active

D03425800

REFERENCES:
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patent: 4914876 (1990-04-01), Forsberg
patent: 4920712 (1990-05-01), Dean, Jr.

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