Building element

Details Building element Building element

1998-10-27

1999-11-02

Zarfas, Louis S.

Building units and construction elements

Architectural stock material

Construction block or brick type

2501

Patent

active

D04160940

REFERENCES:
patent: D310267 (1990-08-01), Zeidman
patent: D340996 (1993-11-01), Woolbright
patent: D360475 (1995-07-01), Woolbright
patent: D372106 (1996-07-01), Woolbright
patent: 4379659 (1983-04-01), Steiner
patent: 5564865 (1996-10-01), Jansson
"Secura Slope" block, gravity Retaining Walls Inc., Buyline 6577, Sweet's General Building and Renovation 1993 Catalog File, 1993.

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