Interlocking paving block

Details Interlocking paving block Interlocking paving block

1999-07-14

2000-08-15

Zarfas, Louis S.

Building units and construction elements

Architectural stock material

Construction block or brick type

2501

Patent

active

D04295307

REFERENCES:
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patent: 4773790 (1988-09-01), Hagenah
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patent: 5244303 (1993-09-01), Hair
patent: 5249884 (1993-10-01), Widmer
patent: 5267810 (1993-12-01), Johnson
patent: 5466089 (1995-11-01), Jurik
Appian Circle Pattern--Matrix #B91305 Tudor, Hanover Buyline 6800, Sweets General Contractor Catalog, 1993.

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